542220534 has 32 divisors (see below), whose sum is σ = 1205729280. Its totient is φ = 180621000.

The previous prime is 542220527. The next prime is 542220563. The reversal of 542220534 is 435022245.

It is a happy number.

542220534 is a `hidden beast` number, since 5 + 422 + 205 + 34 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 542220498 and 542220507.

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, 124819 + ... + 129089.

It is an arithmetic number, because the mean of its divisors is an integer number (37679040).

Almost surely, 2^542220534 is an apocalyptic number.

542220534 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

542220534 is an abundant number, since it is smaller than the sum of its proper divisors (663508746).

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

542220534 is a wasteful number, since it uses less digits than its factorization.

542220534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6633 (or 6627 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 542220534 is about 23285.6293451562. The cubic root of 542220534 is about 815.4399541629.

Adding to 542220534 its reverse (435022245), we get a palindrome (977242779).

The spelling of 542220534 in words is "five hundred forty-two million, two hundred twenty thousand, five hundred thirty-four".