42546540 has 48 divisors (see below), whose sum is σ = 119508480. Its totient is φ = 11309760.

The previous prime is 42546533. The next prime is 42546557. The reversal of 42546540 is 4564524.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 42546498 and 42546507.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21805 + ... + 23675.

It is an arithmetic number, because the mean of its divisors is an integer number (2489760).

Almost surely, 2^42546540 is an apocalyptic number.

It is an amenable number.

42546540 is an abundant number, since it is smaller than the sum of its proper divisors (76961940).

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

42546540 is a wasteful number, since it uses less digits than its factorization.

42546540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2262 (or 2260 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 42546540 is about 6522.7708836046. The cubic root of 42546540 is about 349.1039391788.

The spelling of 42546540 in words is "forty-two million, five hundred forty-six thousand, five hundred forty".