542092981 has 2 divisors, whose sum is σ = 542092982. Its totient is φ = 542092980.

The previous prime is 542092973. The next prime is 542092987. The reversal of 542092981 is 189290245.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 465092356 + 77000625 = 21566^2 + 8775^2 .

It is a cyclic number.

It is not a de Polignac number, because 542092981 - 2³ = 542092973 is a prime.

It is a super-2 number, since 2×542092981² = 587729600098932722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (542092987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271046490 + 271046491.

It is an arithmetic number, because the mean of its divisors is an integer number (271046491).

Almost surely, 2^542092981 is an apocalyptic number.

It is an amenable number.

542092981 is a deficient number, since it is larger than the sum of its proper divisors (1).

542092981 is an equidigital number, since it uses as much as digits as its factorization.

542092981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 542092981 is about 23282.8903059736. The cubic root of 542092981 is about 815.3760072612.

The spelling of 542092981 in words is "five hundred forty-two million, ninety-two thousand, nine hundred eighty-one".