2142122431 has 8 divisors (see below), whose sum is σ = 2188393920. Its totient is φ = 2095879968.

The previous prime is 2142122419. The next prime is 2142122461. The reversal of 2142122431 is 1342212412.

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-2142122431 is a prime.

It is a super-2 number, since 2×2142122431² = 9177377018786699522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142122461) 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, 213025 + ... + 222853.

It is an arithmetic number, because the mean of its divisors is an integer number (273549240).

Almost surely, 2^2142122431 is an apocalyptic number.

2142122431 is a deficient number, since it is larger than the sum of its proper divisors (46271489).

2142122431 is an equidigital number, since it uses as much as digits as its factorization.

2142122431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14513.

The product of its digits is 768, while the sum is 22.

The square root of 2142122431 is about 46283.0685132263. The cubic root of 2142122431 is about 1289.0846281418.

Adding to 2142122431 its reverse (1342212412), we get a palindrome (3484334843).

The spelling of 2142122431 in words is "two billion, one hundred forty-two million, one hundred twenty-two thousand, four hundred thirty-one".