142240021431 has 8 divisors (see below), whose sum is σ = 189659885184. Its totient is φ = 94823419320.

The previous prime is 142240021349. The next prime is 142240021477. The reversal of 142240021431 is 134120042241.

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

It is not a de Polignac number, because 142240021431 - 2¹⁰ = 142240020407 is a prime.

It is a super-2 number, since 2×142240021431² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142248021431) 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, 711771 + ... + 889436.

It is an arithmetic number, because the mean of its divisors is an integer number (23707485648).

Almost surely, 2^142240021431 is an apocalyptic number.

142240021431 is a deficient number, since it is larger than the sum of its proper divisors (47419863753).

142240021431 is a wasteful number, since it uses less digits than its factorization.

142240021431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1630821.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 142240021431 its reverse (134120042241), we get a palindrome (276360063672).

The spelling of 142240021431 in words is "one hundred forty-two billion, two hundred forty million, twenty-one thousand, four hundred thirty-one".