9942492401 has 2 divisors, whose sum is σ = 9942492402. Its totient is φ = 9942492400.

The previous prime is 9942492361. The next prime is 9942492421. The reversal of 9942492401 is 1042942499.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6209282401 + 3733210000 = 78799^2 + 61100^2 .

It is an emirp because it is prime and its reverse (1042942499) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9942492401 - 2¹⁴ = 9942476017 is a prime.

It is not a weakly prime, because it can be changed into another prime (9942492421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4971246200 + 4971246201.

It is an arithmetic number, because the mean of its divisors is an integer number (4971246201).

Almost surely, 2^9942492401 is an apocalyptic number.

It is an amenable number.

9942492401 is a deficient number, since it is larger than the sum of its proper divisors (1).

9942492401 is an equidigital number, since it uses as much as digits as its factorization.

9942492401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 9942492401 is about 99712.0474215629. The cubic root of 9942492401 is about 2150.2968691204.

The spelling of 9942492401 in words is "nine billion, nine hundred forty-two million, four hundred ninety-two thousand, four hundred one".