542615631 has 8 divisors (see below), whose sum is σ = 728279424. Its totient is φ = 359347800.

The previous prime is 542615629. The next prime is 542615641. The reversal of 542615631 is 136516245.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 542615631 - 2¹ = 542615629 is a prime.

It is a super-2 number, since 2×542615631² = 588863446011056322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 542615592 and 542615601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542615621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 598461 + ... + 599366.

It is an arithmetic number, because the mean of its divisors is an integer number (91034928).

Almost surely, 2^542615631 is an apocalyptic number.

542615631 is a deficient number, since it is larger than the sum of its proper divisors (185663793).

542615631 is a wasteful number, since it uses less digits than its factorization.

542615631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1197981.

The product of its digits is 21600, while the sum is 33.

The square root of 542615631 is about 23294.1115091347. Note that the first 3 decimals coincide. The cubic root of 542615631 is about 815.6379668642.

The spelling of 542615631 in words is "five hundred forty-two million, six hundred fifteen thousand, six hundred thirty-one".