142124323242421 has 16 divisors (see below), whose sum is σ = 153336785140224. Its totient is φ = 130951969150464.

The previous prime is 142124323242401. The next prime is 142124323242467. The reversal of 142124323242421 is 124242323421241.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 142124323242421 - 2²³ = 142124314853813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142124323242401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22833360 + ... + 28383286.

It is an arithmetic number, because the mean of its divisors is an integer number (9583549071264).

Almost surely, 2^{142124323242421} is an apocalyptic number.

It is an amenable number.

142124323242421 is a deficient number, since it is larger than the sum of its proper divisors (11212461897803).

142124323242421 is a wasteful number, since it uses less digits than its factorization.

142124323242421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5553540.

The product of its digits is 147456, while the sum is 37.

Adding to 142124323242421 its reverse (124242323421241), we get a palindrome (266366646663662).

The spelling of 142124323242421 in words is "one hundred forty-two trillion, one hundred twenty-four billion, three hundred twenty-three million, two hundred forty-two thousand, four hundred twenty-one".