542615766 has 64 divisors (see below), whose sum is σ = 1370234880. Its totient is φ = 139145760.

The previous prime is 542615761. The next prime is 542615797. The reversal of 542615766 is 667516245.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542615761) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29065 + ... + 43931.

It is an arithmetic number, because the mean of its divisors is an integer number (21409920).

Almost surely, 2^542615766 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 542615766, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (685117440).

542615766 is an abundant number, since it is smaller than the sum of its proper divisors (827619114).

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

542615766 is a wasteful number, since it uses less digits than its factorization.

542615766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14969.

The product of its digits is 302400, while the sum is 42.

The square root of 542615766 is about 23294.1144068625. The cubic root of 542615766 is about 815.6380345064.

The spelling of 542615766 in words is "five hundred forty-two million, six hundred fifteen thousand, seven hundred sixty-six".