542762640 has 160 divisors (see below), whose sum is σ = 2136648960. Its totient is φ = 124056576.

The previous prime is 542762639. The next prime is 542762677. The reversal of 542762640 is 46267245.

542762640 is a `hidden beast` number, since 5 + 4 + 2 + 7 + 6 + 2 + 640 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 542762595 and 542762604.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2829 + ... + 33068.

It is an arithmetic number, because the mean of its divisors is an integer number (13354056).

Almost surely, 2^542762640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 542762640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1068324480).

542762640 is an abundant number, since it is smaller than the sum of its proper divisors (1593886320).

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

542762640 is a wasteful number, since it uses less digits than its factorization.

542762640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35926 (or 35914 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

The square root of 542762640 is about 23297.2667924802. The cubic root of 542762640 is about 815.7116195495.

The spelling of 542762640 in words is "five hundred forty-two million, seven hundred sixty-two thousand, six hundred forty".