30142515457 has 4 divisors (see below), whose sum is σ = 30362533956. Its totient is φ = 29922496960.

The previous prime is 30142515421. The next prime is 30142515463. The reversal of 30142515457 is 75451524103.

It is a Cunningham number, because it is equal to 173616²+1.

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 17706028096 + 12436487361 = 133064^2 + 111519^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30142515457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30142515257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110009044 + ... + 110009317.

It is an arithmetic number, because the mean of its divisors is an integer number (7590633489).

Almost surely, 2^30142515457 is an apocalyptic number.

It is an amenable number.

30142515457 is a deficient number, since it is larger than the sum of its proper divisors (220018499).

30142515457 is a wasteful number, since it uses less digits than its factorization.

30142515457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220018498.

The product of its (nonzero) digits is 84000, while the sum is 37.

The spelling of 30142515457 in words is "thirty billion, one hundred forty-two million, five hundred fifteen thousand, four hundred fifty-seven".