42146540 has 12 divisors (see below), whose sum is σ = 88507776. Its totient is φ = 16858608.

The previous prime is 42146537. The next prime is 42146549. The reversal of 42146540 is 4564124.

It is not an unprimeable number, because it can be changed into a prime (42146549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1053644 + ... + 1053683.

It is an arithmetic number, because the mean of its divisors is an integer number (7375648).

Almost surely, 2^42146540 is an apocalyptic number.

It is an amenable number.

42146540 is an abundant number, since it is smaller than the sum of its proper divisors (46361236).

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

42146540 is a wasteful number, since it uses less digits than its factorization.

42146540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2107336 (or 2107334 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 42146540 is about 6492.0366604017. The cubic root of 42146540 is about 348.0064626448.

The spelling of 42146540 in words is "forty-two million, one hundred forty-six thousand, five hundred forty".