542212144551505 has 4 divisors (see below), whose sum is σ = 650654573461812. Its totient is φ = 433769715641200.

The previous prime is 542212144551479. The next prime is 542212144551509. The reversal of 542212144551505 is 505155441212245.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 356499109241856 + 185713035309649 = 18881184^2 + 13627657^2 .

It is a de Polignac number, because none of the positive numbers 2^k-542212144551505 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (542212144551509) 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, 54221214455146 + ... + 54221214455155.

It is an arithmetic number, because the mean of its divisors is an integer number (162663643365453).

Almost surely, 2^{542212144551505} is an apocalyptic number.

It is an amenable number.

542212144551505 is a deficient number, since it is larger than the sum of its proper divisors (108442428910307).

542212144551505 is a wasteful number, since it uses less digits than its factorization.

542212144551505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108442428910306.

The product of its (nonzero) digits is 1600000, while the sum is 46.

The spelling of 542212144551505 in words is "five hundred forty-two trillion, two hundred twelve billion, one hundred forty-four million, five hundred fifty-one thousand, five hundred five".