145425240 has 192 divisors, whose sum is σ = 512978400. Its totient is φ = 36640512.

The previous prime is 145425239. The next prime is 145425257. The reversal of 145425240 is 42524541.

It is a super-2 number, since 2×145425240² = 42297000858115200, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 389694 + ... + 390066.

Almost surely, 2^145425240 is an apocalyptic number.

145425240 is a gapful number since it is divisible by the number (10) 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 145425240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256489200).

145425240 is an abundant number, since it is smaller than the sum of its proper divisors (367553160).

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

145425240 is a wasteful number, since it uses less digits than its factorization.

145425240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431 (or 402 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 145425240 is about 12059.2387819464. The cubic root of 145425240 is about 525.8718574440.

Adding to 145425240 its reverse (42524541), we get a palindrome (187949781).

The spelling of 145425240 in words is "one hundred forty-five million, four hundred twenty-five thousand, two hundred forty".