30741372421 has 2 divisors, whose sum is σ = 30741372422. Its totient is φ = 30741372420.

The previous prime is 30741372419. The next prime is 30741372437. The reversal of 30741372421 is 12427314703.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26156592900 + 4584779521 = 161730^2 + 67711^2 .

It is a cyclic number.

It is not a de Polignac number, because 30741372421 - 2¹ = 30741372419 is a prime.

Together with 30741372419, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30741372401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15370686210 + 15370686211.

It is an arithmetic number, because the mean of its divisors is an integer number (15370686211).

Almost surely, 2^30741372421 is an apocalyptic number.

It is an amenable number.

30741372421 is a deficient number, since it is larger than the sum of its proper divisors (1).

30741372421 is an equidigital number, since it uses as much as digits as its factorization.

30741372421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 34.

The spelling of 30741372421 in words is "thirty billion, seven hundred forty-one million, three hundred seventy-two thousand, four hundred twenty-one".