142013431 has 8 divisors (see below), whose sum is σ = 169357824. Its totient is φ = 116433240.

The previous prime is 142013423. The next prime is 142013479. The reversal of 142013431 is 134310241.

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

It is not a de Polignac number, because 142013431 - 2³ = 142013423 is a prime.

It is a super-2 number, since 2×142013431² = 40335629168783522, 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 = 142013399 and 142013408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142013231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 440875 + ... + 441196.

It is an arithmetic number, because the mean of its divisors is an integer number (21169728).

Almost surely, 2^142013431 is an apocalyptic number.

142013431 is a deficient number, since it is larger than the sum of its proper divisors (27344393).

142013431 is an equidigital number, since it uses as much as digits as its factorization.

142013431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882101.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 142013431 is about 11916.9388267290. The cubic root of 142013431 is about 521.7267926810.

Adding to 142013431 its reverse (134310241), we get a palindrome (276323672).

The spelling of 142013431 in words is "one hundred forty-two million, thirteen thousand, four hundred thirty-one".