542621436 has 96 divisors (see below), whose sum is σ = 1585059840. Its totient is φ = 140872704.

The previous prime is 542621423. The next prime is 542621441. The reversal of 542621436 is 634126245.

It is a junction number, because it is equal to n+sod(n) for n = 542621397 and 542621406.

It is a congruent number.

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, 34861 + ... + 47963.

It is an arithmetic number, because the mean of its divisors is an integer number (16511040).

Almost surely, 2^542621436 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 542621436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (792529920).

542621436 is an abundant number, since it is smaller than the sum of its proper divisors (1042438404).

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

542621436 is a wasteful number, since it uses less digits than its factorization.

542621436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13163 (or 13161 counting only the distinct ones).

The product of its digits is 34560, while the sum is 33.

The square root of 542621436 is about 23294.2361111070. The cubic root of 542621436 is about 815.6408754679.

It can be divided in two parts, 5426 and 21436, that added together give a palindrome (26862).

The spelling of 542621436 in words is "five hundred forty-two million, six hundred twenty-one thousand, four hundred thirty-six".