542809965 has 32 divisors (see below), whose sum is σ = 900057600. Its totient is φ = 279014400.

The previous prime is 542809961. The next prime is 542809973. The reversal of 542809965 is 569908245.

It is not a de Polignac number, because 542809965 - 2² = 542809961 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542809961) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 451365 + ... + 452565.

It is an arithmetic number, because the mean of its divisors is an integer number (28126800).

Almost surely, 2^542809965 is an apocalyptic number.

It is an amenable number.

542809965 is a deficient number, since it is larger than the sum of its proper divisors (357247635).

542809965 is a wasteful number, since it uses less digits than its factorization.

542809965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2277.

The product of its (nonzero) digits is 777600, while the sum is 48.

The square root of 542809965 is about 23298.2824474252. The cubic root of 542809965 is about 815.7353269234.

The spelling of 542809965 in words is "five hundred forty-two million, eight hundred nine thousand, nine hundred sixty-five".