42437540 has 12 divisors (see below), whose sum is σ = 89118876. Its totient is φ = 16975008.

The previous prime is 42437533. The next prime is 42437573. The reversal of 42437540 is 4573424.

It can be written as a sum of positive squares in 2 ways, for example, as 11723776 + 30713764 = 3424^2 + 5542^2 .

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, 1060919 + ... + 1060958.

It is an arithmetic number, because the mean of its divisors is an integer number (7426573).

Almost surely, 2^42437540 is an apocalyptic number.

It is an amenable number.

42437540 is an abundant number, since it is smaller than the sum of its proper divisors (46681336).

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

42437540 is a wasteful number, since it uses less digits than its factorization.

42437540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2121886 (or 2121884 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 29.

The square root of 42437540 is about 6514.4101805152. The cubic root of 42437540 is about 348.8055610489.

The spelling of 42437540 in words is "forty-two million, four hundred thirty-seven thousand, five hundred forty".