145012904 has 8 divisors (see below), whose sum is σ = 271899210. Its totient is φ = 72506448.

The previous prime is 145012897. The next prime is 145012919. The reversal of 145012904 is 409210541.

It can be written as a sum of positive squares in only one way, i.e., 143952004 + 1060900 = 11998^2 + 1030^2 .

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

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 as a sum of consecutive naturals, namely, 9063299 + ... + 9063314.

Almost surely, 2^145012904 is an apocalyptic number.

It is an amenable number.

145012904 is a deficient number, since it is larger than the sum of its proper divisors (126886306).

145012904 is a wasteful number, since it uses less digits than its factorization.

145012904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18126619 (or 18126615 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 145012904 is about 12042.1303763080. The cubic root of 145012904 is about 525.3743712233.

The spelling of 145012904 in words is "one hundred forty-five million, twelve thousand, nine hundred four".