542071220 has 12 divisors (see below), whose sum is σ = 1138349604. Its totient is φ = 216828480.

The previous prime is 542071217. The next prime is 542071223. The reversal of 542071220 is 22170245.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (542071217) and next prime (542071223).

It can be written as a sum of positive squares in 2 ways, for example, as 61058596 + 481012624 = 7814^2 + 21932^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542071223) 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, 13551761 + ... + 13551800.

It is an arithmetic number, because the mean of its divisors is an integer number (94862467).

Almost surely, 2^542071220 is an apocalyptic number.

It is an amenable number.

542071220 is an abundant number, since it is smaller than the sum of its proper divisors (596278384).

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

542071220 is a wasteful number, since it uses less digits than its factorization.

542071220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27103570 (or 27103568 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 542071220 is about 23282.4229838735. The cubic root of 542071220 is about 815.3650966884.

The spelling of 542071220 in words is "five hundred forty-two million, seventy-one thousand, two hundred twenty".