145742724 has 36 divisors (see below), whose sum is σ = 369633264. Its totient is φ = 48418992.

The previous prime is 145742713. The next prime is 145742731. The reversal of 145742724 is 427247541.

145742724 is a `hidden beast` number, since 14 + 574 + 2 + 72 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4459 + ... + 17645.

Almost surely, 2^145742724 is an apocalyptic number.

It is an amenable number.

145742724 is an abundant number, since it is smaller than the sum of its proper divisors (223890540).

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

145742724 is a wasteful number, since it uses less digits than its factorization.

145742724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13504 (or 13499 counting only the distinct ones).

The product of its digits is 62720, while the sum is 36.

The square root of 145742724 is about 12072.3951227584. The cubic root of 145742724 is about 526.2542636704.

The spelling of 145742724 in words is "one hundred forty-five million, seven hundred forty-two thousand, seven hundred twenty-four".