75012421039 has 2 divisors, whose sum is σ = 75012421040. Its totient is φ = 75012421038.

The previous prime is 75012421037. The next prime is 75012421079. The reversal of 75012421039 is 93012421057.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 75012421039 - 2¹ = 75012421037 is a prime.

Together with 75012421037, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 75012420995 and 75012421013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75012421037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37506210519 + 37506210520.

It is an arithmetic number, because the mean of its divisors is an integer number (37506210520).

Almost surely, 2^75012421039 is an apocalyptic number.

75012421039 is a deficient number, since it is larger than the sum of its proper divisors (1).

75012421039 is an equidigital number, since it uses as much as digits as its factorization.

75012421039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 34.

The spelling of 75012421039 in words is "seventy-five billion, twelve million, four hundred twenty-one thousand, thirty-nine".