30142515421 has 2 divisors, whose sum is σ = 30142515422. Its totient is φ = 30142515420.

The previous prime is 30142515383. The next prime is 30142515463. The reversal of 30142515421 is 12451524103.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19407276100 + 10735239321 = 139310^2 + 103611^2 .

It is a cyclic number.

It is not a de Polignac number, because 30142515421 - 2²⁵ = 30108960989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30142515421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30142515721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15071257710 + 15071257711.

It is an arithmetic number, because the mean of its divisors is an integer number (15071257711).

Almost surely, 2^30142515421 is an apocalyptic number.

It is an amenable number.

30142515421 is a deficient number, since it is larger than the sum of its proper divisors (1).

30142515421 is an equidigital number, since it uses as much as digits as its factorization.

30142515421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4800, while the sum is 28.

The spelling of 30142515421 in words is "thirty billion, one hundred forty-two million, five hundred fifteen thousand, four hundred twenty-one".