145421372 has 24 divisors (see below), whose sum is σ = 265668480. Its totient is φ = 69569280.

The previous prime is 145421363. The next prime is 145421389. The reversal of 145421372 is 273124541.

145421372 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×145421372² = 42294750868724768, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4448 + ... + 17624.

It is an arithmetic number, because the mean of its divisors is an integer number (11069520).

Almost surely, 2^145421372 is an apocalyptic number.

It is an amenable number.

145421372 is a deficient number, since it is larger than the sum of its proper divisors (120247108).

145421372 is a wasteful number, since it uses less digits than its factorization.

145421372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13301 (or 13299 counting only the distinct ones).

The product of its digits is 6720, while the sum is 29.

The square root of 145421372 is about 12059.0784059148. The cubic root of 145421372 is about 525.8671950475.

The spelling of 145421372 in words is "one hundred forty-five million, four hundred twenty-one thousand, three hundred seventy-two".