145162240 has 68 divisors (see below), whose sum is σ = 349173144. Its totient is φ = 57933824.

The previous prime is 145162183. The next prime is 145162289. The reversal of 145162240 is 42261541.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327459 + ... + 327901.

Almost surely, 2^145162240 is an apocalyptic number.

145162240 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 145162240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174586572).

145162240 is an abundant number, since it is smaller than the sum of its proper divisors (204010904).

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

145162240 is an frugal number, since it uses more digits than its factorization.

145162240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480 (or 450 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 145162240 is about 12048.3293447681. The cubic root of 145162240 is about 525.5546549274.

The spelling of 145162240 in words is "one hundred forty-five million, one hundred sixty-two thousand, two hundred forty".