142224431 has 8 divisors (see below), whose sum is σ = 152712864. Its totient is φ = 131971840.

The previous prime is 142224427. The next prime is 142224457. The reversal of 142224431 is 134422241.

142224431 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 142224431 - 2² = 142224427 is a prime.

It is a super-2 number, since 2×142224431² = 40455577546547522, 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 = 142224397 and 142224406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142224421) 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, 57710 + ... + 60123.

It is an arithmetic number, because the mean of its divisors is an integer number (19089108).

Almost surely, 2^142224431 is an apocalyptic number.

142224431 is a deficient number, since it is larger than the sum of its proper divisors (10488433).

142224431 is a wasteful number, since it uses less digits than its factorization.

142224431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117921.

The product of its digits is 1536, while the sum is 23.

The square root of 142224431 is about 11925.7884854629. The cubic root of 142224431 is about 521.9850543521.

Adding to 142224431 its reverse (134422241), we get a palindrome (276646672).

The spelling of 142224431 in words is "one hundred forty-two million, two hundred twenty-four thousand, four hundred thirty-one".