30420724237 has 8 divisors (see below), whose sum is σ = 31268995704. Its totient is φ = 29582611968.

The previous prime is 30420724223. The next prime is 30420724241. The reversal of 30420724237 is 73242702403.

It can be written as a sum of positive squares in 4 ways, for example, as 909263716 + 29511460521 = 30154^2 + 171789^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30420724237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30420764237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2533728 + ... + 2545705.

It is an arithmetic number, because the mean of its divisors is an integer number (3908624463).

Almost surely, 2^30420724237 is an apocalyptic number.

It is an amenable number.

30420724237 is a deficient number, since it is larger than the sum of its proper divisors (848271467).

30420724237 is a wasteful number, since it uses less digits than its factorization.

30420724237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5079599.

The product of its (nonzero) digits is 56448, while the sum is 34.

The spelling of 30420724237 in words is "thirty billion, four hundred twenty million, seven hundred twenty-four thousand, two hundred thirty-seven".