542737644 has 24 divisors (see below), whose sum is σ = 1277598000. Its totient is φ = 179311104.

The previous prime is 542737633. The next prime is 542737661. The reversal of 542737644 is 446737245.

It is a junction number, because it is equal to n+sod(n) for n = 542737596 and 542737605.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198769 + ... + 201480.

It is an arithmetic number, because the mean of its divisors is an integer number (53233250).

Almost surely, 2^542737644 is an apocalyptic number.

It is an amenable number.

542737644 is an abundant number, since it is smaller than the sum of its proper divisors (734860356).

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

542737644 is a wasteful number, since it uses less digits than its factorization.

542737644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400369 (or 400367 counting only the distinct ones).

The product of its digits is 564480, while the sum is 42.

The square root of 542737644 is about 23296.7303285246. The cubic root of 542737644 is about 815.6990972920.

It can be divided in two parts, 5427 and 37644, that added together give a triangular number (43071 = T₂₉₃).

The spelling of 542737644 in words is "five hundred forty-two million, seven hundred thirty-seven thousand, six hundred forty-four".