142023431 has 8 divisors (see below), whose sum is σ = 159932928. Its totient is φ = 124947000.

The previous prime is 142023397. The next prime is 142023439. The reversal of 142023431 is 134320241.

142023431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 142023431 - 2¹⁰ = 142022407 is a prime.

It is a super-2 number, since 2×142023431² = 40341309906023522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142023439) 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, 207905 + ... + 208586.

It is an arithmetic number, because the mean of its divisors is an integer number (19991616).

Almost surely, 2^142023431 is an apocalyptic number.

142023431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

142023431 is a deficient number, since it is larger than the sum of its proper divisors (17909497).

142023431 is a wasteful number, since it uses less digits than its factorization.

142023431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416533.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 142023431 is about 11917.3583901803. The cubic root of 142023431 is about 521.7390383431.

Adding to 142023431 its reverse (134320241), we get a palindrome (276343672).

The spelling of 142023431 in words is "one hundred forty-two million, twenty-three thousand, four hundred thirty-one".