542079969 has 16 divisors (see below), whose sum is σ = 775778112. Its totient is φ = 335467008.

The previous prime is 542079953. The next prime is 542079971. The reversal of 542079969 is 969970245.

It is not a de Polignac number, because 542079969 - 2⁴ = 542079953 is a prime.

It is a super-2 number, since 2×542079969² = 587701385582081922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (542079929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69079 + ... + 76524.

It is an arithmetic number, because the mean of its divisors is an integer number (48486132).

Almost surely, 2^542079969 is an apocalyptic number.

It is an amenable number.

542079969 is a deficient number, since it is larger than the sum of its proper divisors (233698143).

542079969 is a wasteful number, since it uses less digits than its factorization.

542079969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145696.

The product of its (nonzero) digits is 1224720, while the sum is 51.

The square root of 542079969 is about 23282.6108716355. The cubic root of 542079969 is about 815.3694833143.

The spelling of 542079969 in words is "five hundred forty-two million, seventy-nine thousand, nine hundred sixty-nine".