542124640 has 24 divisors (see below), whose sum is σ = 1280769840. Its totient is φ = 216849792.

The previous prime is 542124617. The next prime is 542124641. The reversal of 542124640 is 46421245.

It is a junction number, because it is equal to n+sod(n) for n = 542124599 and 542124608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542124641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1693980 + ... + 1694299.

It is an arithmetic number, because the mean of its divisors is an integer number (53365410).

Almost surely, 2^542124640 is an apocalyptic number.

It is an amenable number.

542124640 is an abundant number, since it is smaller than the sum of its proper divisors (738645200).

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

542124640 is a wasteful number, since it uses less digits than its factorization.

542124640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3388294 (or 3388286 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 542124640 is about 23283.5701729782. The cubic root of 542124640 is about 815.3918799911.

Adding to 542124640 its reverse (46421245), we get a palindrome (588545885).

The spelling of 542124640 in words is "five hundred forty-two million, one hundred twenty-four thousand, six hundred forty".