542665940 has 48 divisors (see below), whose sum is σ = 1177173648. Its totient is φ = 210023424.

The previous prime is 542665927. The next prime is 542665967. The reversal of 542665940 is 49566245.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 37405456 + 505260484 = 6116^2 + 22478^2 .

It is a congruent number.

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, 73874 + ... + 80886.

It is an arithmetic number, because the mean of its divisors is an integer number (24524451).

Almost surely, 2^542665940 is an apocalyptic number.

It is an amenable number.

542665940 is an abundant number, since it is smaller than the sum of its proper divisors (634507708).

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

542665940 is a wasteful number, since it uses less digits than its factorization.

542665940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7148 (or 7146 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 41.

The square root of 542665940 is about 23295.1913492892. The cubic root of 542665940 is about 815.6631735729.

It can be divided in two parts, 54266 and 5940, that added together give a palindrome (60206).

The spelling of 542665940 in words is "five hundred forty-two million, six hundred sixty-five thousand, nine hundred forty".