7974420431 has 2 divisors, whose sum is σ = 7974420432. Its totient is φ = 7974420430.

The previous prime is 7974420427. The next prime is 7974420463. The reversal of 7974420431 is 1340244797.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7974420431 - 2² = 7974420427 is a prime.

It is a super-2 number, since 2×7974420431² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7974420031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3987210215 + 3987210216.

It is an arithmetic number, because the mean of its divisors is an integer number (3987210216).

Almost surely, 2^7974420431 is an apocalyptic number.

7974420431 is a deficient number, since it is larger than the sum of its proper divisors (1).

7974420431 is an equidigital number, since it uses as much as digits as its factorization.

7974420431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 169344, while the sum is 41.

The square root of 7974420431 is about 89299.6104750743. The cubic root of 7974420431 is about 1997.8660932808.

The spelling of 7974420431 in words is "seven billion, nine hundred seventy-four million, four hundred twenty thousand, four hundred thirty-one".