42134740 has 12 divisors (see below), whose sum is σ = 88482996. Its totient is φ = 16853888.

The previous prime is 42134731. The next prime is 42134777. The reversal of 42134740 is 4743124.

It can be written as a sum of positive squares in 2 ways, for example, as 26357956 + 15776784 = 5134^2 + 3972^2 .

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, 1053349 + ... + 1053388.

It is an arithmetic number, because the mean of its divisors is an integer number (7373583).

Almost surely, 2^42134740 is an apocalyptic number.

It is an amenable number.

42134740 is an abundant number, since it is smaller than the sum of its proper divisors (46348256).

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

42134740 is a wasteful number, since it uses less digits than its factorization.

42134740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2106746 (or 2106744 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 42134740 is about 6491.1277910699. The cubic root of 42134740 is about 347.9739818484.

Adding to 42134740 its reverse (4743124), we get a palindrome (46877864).

The spelling of 42134740 in words is "forty-two million, one hundred thirty-four thousand, seven hundred forty".