542402669 has 2 divisors, whose sum is σ = 542402670. Its totient is φ = 542402668.

The previous prime is 542402621. The next prime is 542402711. The reversal of 542402669 is 966204245.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 454755625 + 87647044 = 21325^2 + 9362^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-542402669 is a prime.

It is a super-2 number, since 2×542402669² = 588401310676647122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542402269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271201334 + 271201335.

It is an arithmetic number, because the mean of its divisors is an integer number (271201335).

Almost surely, 2^542402669 is an apocalyptic number.

It is an amenable number.

542402669 is a deficient number, since it is larger than the sum of its proper divisors (1).

542402669 is an equidigital number, since it uses as much as digits as its factorization.

542402669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 542402669 is about 23289.5399052880. The cubic root of 542402669 is about 815.5312476005.

The spelling of 542402669 in words is "five hundred forty-two million, four hundred two thousand, six hundred sixty-nine".