142011631 has 8 divisors (see below), whose sum is σ = 144211760. Its totient is φ = 139828032.

The previous prime is 142011601. The next prime is 142011641. The reversal of 142011631 is 136110241.

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 142011631 - 2⁷ = 142011503 is a prime.

It is a super-2 number, since 2×142011631² = 40334606678560322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142011599 and 142011608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142011601) 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, 13771 + ... + 21763.

It is an arithmetic number, because the mean of its divisors is an integer number (18026470).

Almost surely, 2^142011631 is an apocalyptic number.

142011631 is a deficient number, since it is larger than the sum of its proper divisors (2200129).

142011631 is a wasteful number, since it uses less digits than its factorization.

142011631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8265.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 142011631 is about 11916.8633037389. The cubic root of 142011631 is about 521.7245884007.

Adding to 142011631 its reverse (136110241), we get a palindrome (278121872).

The spelling of 142011631 in words is "one hundred forty-two million, eleven thousand, six hundred thirty-one".