142003421531 has 16 divisors (see below), whose sum is σ = 150749619840. Its totient is φ = 133301376000.

The previous prime is 142003421519. The next prime is 142003421543. The reversal of 142003421531 is 135124300241.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (142003421519) and next prime (142003421543).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142003421531 is a prime.

It is a super-2 number, since 2×142003421531² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142003421531.

It is not an unprimeable number, because it can be changed into a prime (142003621531) 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 15 ways as a sum of consecutive naturals, for example, 10577135 + ... + 10590551.

It is an arithmetic number, because the mean of its divisors is an integer number (9421851240).

Almost surely, 2^142003421531 is an apocalyptic number.

142003421531 is a deficient number, since it is larger than the sum of its proper divisors (8746198309).

142003421531 is a wasteful number, since it uses less digits than its factorization.

142003421531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15014.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 142003421531 its reverse (135124300241), we get a palindrome (277127721772).

The spelling of 142003421531 in words is "one hundred forty-two billion, three million, four hundred twenty-one thousand, five hundred thirty-one".