145412440 has 64 divisors (see below), whose sum is σ = 343699200. Its totient is φ = 55262592.

The previous prime is 145412429. The next prime is 145412447. The reversal of 145412440 is 44214541.

It is a super-2 number, since 2×145412440² = 42289555413507200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145412447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164239 + ... + 165121.

It is an arithmetic number, because the mean of its divisors is an integer number (5370300).

Almost surely, 2^145412440 is an apocalyptic number.

145412440 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 145412440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171849600).

145412440 is an abundant number, since it is smaller than the sum of its proper divisors (198286760).

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

145412440 is a wasteful number, since it uses less digits than its factorization.

145412440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096 (or 1092 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 145412440 is about 12058.7080568359. The cubic root of 145412440 is about 525.8564283083.

Adding to 145412440 its reverse (44214541), we get a palindrome (189626981).

The spelling of 145412440 in words is "one hundred forty-five million, four hundred twelve thousand, four hundred forty".