542610491 has 2 divisors, whose sum is σ = 542610492. Its totient is φ = 542610490.

The previous prime is 542610487. The next prime is 542610511. The reversal of 542610491 is 194016245.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 542610491 - 2² = 542610487 is a prime.

It is a super-2 number, since 2×542610491² = 588852289886522162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (542610401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271305245 + 271305246.

It is an arithmetic number, because the mean of its divisors is an integer number (271305246).

Almost surely, 2^542610491 is an apocalyptic number.

542610491 is a deficient number, since it is larger than the sum of its proper divisors (1).

542610491 is an equidigital number, since it uses as much as digits as its factorization.

542610491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 542610491 is about 23294.0011805615. The cubic root of 542610491 is about 815.6353914424.

The spelling of 542610491 in words is "five hundred forty-two million, six hundred ten thousand, four hundred ninety-one".