42145628 has 12 divisors (see below), whose sum is σ = 84291312. Its totient is φ = 18062400.

The previous prime is 42145619. The next prime is 42145639. The reversal of 42145628 is 82654124.

42145628 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 42145594 and 42145603.

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, 752573 + ... + 752628.

It is an arithmetic number, because the mean of its divisors is an integer number (7024276).

Almost surely, 2^42145628 is an apocalyptic number.

It is an amenable number.

42145628 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

42145628 is a wasteful number, since it uses less digits than its factorization.

42145628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1505212 (or 1505210 counting only the distinct ones).

The product of its digits is 15360, while the sum is 32.

The square root of 42145628 is about 6491.9664201226. The cubic root of 42145628 is about 348.0039524808.

The spelling of 42145628 in words is "forty-two million, one hundred forty-five thousand, six hundred twenty-eight".