30137142421 has 4 divisors (see below), whose sum is σ = 30293293612. Its totient is φ = 29980991232.

The previous prime is 30137142419. The next prime is 30137142433. The reversal of 30137142421 is 12424173103.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11217139921 + 18920002500 = 105911^2 + 137550^2 .

It is a cyclic number.

It is not a de Polignac number, because 30137142421 - 2¹ = 30137142419 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30137142421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30137142401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78075306 + ... + 78075691.

It is an arithmetic number, because the mean of its divisors is an integer number (7573323403).

Almost surely, 2^30137142421 is an apocalyptic number.

It is an amenable number.

30137142421 is a deficient number, since it is larger than the sum of its proper divisors (156151191).

30137142421 is a wasteful number, since it uses less digits than its factorization.

30137142421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156151190.

The product of its (nonzero) digits is 4032, while the sum is 28.

The spelling of 30137142421 in words is "thirty billion, one hundred thirty-seven million, one hundred forty-two thousand, four hundred twenty-one".