142241421531 has 16 divisors (see below), whose sum is σ = 219067003008. Its totient is φ = 81135926400.

The previous prime is 142241421499. The next prime is 142241421547. The reversal of 142241421531 is 135124142241.

It is not a de Polignac number, because 142241421531 - 2⁵ = 142241421499 is a prime.

It is a super-2 number, since 2×142241421531² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (142241421331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126774325 + ... + 126775446.

It is an arithmetic number, because the mean of its divisors is an integer number (13691687688).

Almost surely, 2^142241421531 is an apocalyptic number.

142241421531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

142241421531 is a deficient number, since it is larger than the sum of its proper divisors (76825581477).

142241421531 is a wasteful number, since it uses less digits than its factorization.

142241421531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253549802.

The product of its digits is 7680, while the sum is 30.

Adding to 142241421531 its reverse (135124142241), we get a palindrome (277365563772).

The spelling of 142241421531 in words is "one hundred forty-two billion, two hundred forty-one million, four hundred twenty-one thousand, five hundred thirty-one".