542612626 has 4 divisors (see below), whose sum is σ = 813918942. Its totient is φ = 271306312.

The previous prime is 542612617. The next prime is 542612669. The reversal of 542612626 is 626216245.

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

It can be written as a sum of positive squares in only one way, i.e., 441630225 + 100982401 = 21015^2 + 10049^2 .

It is a super-3 number, since 3×542612626³ (a number of 27 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 542612591 and 542612600.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135653155 + ... + 135653158.

Almost surely, 2^542612626 is an apocalyptic number.

542612626 is a deficient number, since it is larger than the sum of its proper divisors (271306316).

542612626 is a wasteful number, since it uses less digits than its factorization.

542612626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271306315.

The product of its digits is 34560, while the sum is 34.

The square root of 542612626 is about 23294.0470077657. The cubic root of 542612626 is about 815.6364611964.

The spelling of 542612626 in words is "five hundred forty-two million, six hundred twelve thousand, six hundred twenty-six".