145402128 has 100 divisors (see below), whose sum is σ = 424193088. Its totient is φ = 48081600.

The previous prime is 145402123. The next prime is 145402133. The reversal of 145402128 is 821204541.

It is an interprime number because it is at equal distance from previous prime (145402123) and next prime (145402133).

It is a super-2 number, since 2×145402128² = 42283557653856768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (145402123) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 195325 + ... + 196067.

Almost surely, 2^145402128 is an apocalyptic number.

145402128 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145402128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212096544).

145402128 is an abundant number, since it is smaller than the sum of its proper divisors (278790960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145402128 is a wasteful number, since it uses less digits than its factorization.

145402128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914 (or 899 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 145402128 is about 12058.2804744292. The cubic root of 145402128 is about 525.8439975524.

Adding to 145402128 its reverse (821204541), we get a palindrome (966606669).

It can be divided in two parts, 145402 and 128, that added together give a triangular number (145530 = T₅₃₉).

The spelling of 145402128 in words is "one hundred forty-five million, four hundred two thousand, one hundred twenty-eight".