7420752431 has 2 divisors, whose sum is σ = 7420752432. Its totient is φ = 7420752430.

The previous prime is 7420752421. The next prime is 7420752481. The reversal of 7420752431 is 1342570247.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7420752431 is a prime.

It is a super-2 number, since 2×7420752431² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7420752391 and 7420752400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7420752421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3710376215 + 3710376216.

It is an arithmetic number, because the mean of its divisors is an integer number (3710376216).

Almost surely, 2^7420752431 is an apocalyptic number.

7420752431 is a deficient number, since it is larger than the sum of its proper divisors (1).

7420752431 is an equidigital number, since it uses as much as digits as its factorization.

7420752431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47040, while the sum is 35.

The square root of 7420752431 is about 86143.7892769990. The cubic root of 7420752431 is about 1950.5150890870.

The spelling of 7420752431 in words is "seven billion, four hundred twenty million, seven hundred fifty-two thousand, four hundred thirty-one".