145921432 has 8 divisors (see below), whose sum is σ = 273602700. Its totient is φ = 72960712.

The previous prime is 145921429. The next prime is 145921441. The reversal of 145921432 is 234129541.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 145921394 and 145921403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9120082 + ... + 9120097.

Almost surely, 2^145921432 is an apocalyptic number.

It is an amenable number.

145921432 is a deficient number, since it is larger than the sum of its proper divisors (127681268).

145921432 is a wasteful number, since it uses less digits than its factorization.

145921432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18240185 (or 18240181 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

The square root of 145921432 is about 12079.7943691108. The cubic root of 145921432 is about 526.4692713937.

The spelling of 145921432 in words is "one hundred forty-five million, nine hundred twenty-one thousand, four hundred thirty-two".