142013631 has 8 divisors (see below), whose sum is σ = 200489904. Its totient is φ = 89106560.

The previous prime is 142013621. The next prime is 142013633. The reversal of 142013631 is 136310241.

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

It is a cyclic number.

It is not a de Polignac number, because 142013631 - 2⁹ = 142013119 is a prime.

It is a super-2 number, since 2×142013631² = 40335742779608322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 142013598 and 142013607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142013633) 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, 1392240 + ... + 1392341.

It is an arithmetic number, because the mean of its divisors is an integer number (25061238).

Almost surely, 2^142013631 is an apocalyptic number.

142013631 is a deficient number, since it is larger than the sum of its proper divisors (58476273).

142013631 is a wasteful number, since it uses less digits than its factorization.

142013631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2784601.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 142013631 is about 11916.9472181427. The cubic root of 142013631 is about 521.7270375998.

Adding to 142013631 its reverse (136310241), we get a palindrome (278323872).

It can be divided in two parts, 1420 and 13631, that added together give a palindrome (15051).

The spelling of 142013631 in words is "one hundred forty-two million, thirteen thousand, six hundred thirty-one".