30420142131 has 4 divisors (see below), whose sum is σ = 40560189512. Its totient is φ = 20280094752.

The previous prime is 30420142069. The next prime is 30420142163. The reversal of 30420142131 is 13124102403.

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

It is not a de Polignac number, because 30420142131 - 2¹⁹ = 30419617843 is a prime.

It is a super-2 number, since 2×30420142131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30420142098 and 30420142107.

It is not an unprimeable number, because it can be changed into a prime (30420142231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5070023686 + ... + 5070023691.

It is an arithmetic number, because the mean of its divisors is an integer number (10140047378).

Almost surely, 2^30420142131 is an apocalyptic number.

30420142131 is a deficient number, since it is larger than the sum of its proper divisors (10140047381).

30420142131 is a wasteful number, since it uses less digits than its factorization.

30420142131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10140047380.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 30420142131 its reverse (13124102403), we get a palindrome (43544244534).

The spelling of 30420142131 in words is "thirty billion, four hundred twenty million, one hundred forty-two thousand, one hundred thirty-one".