142123323031 has 4 divisors (see below), whose sum is σ = 142124353000. Its totient is φ = 142122293064.

The previous prime is 142123323011. The next prime is 142123323059. The reversal of 142123323031 is 130323321241.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 130323321241 = 29 ⋅4493907629.

It is a cyclic number.

It is not a de Polignac number, because 142123323031 - 2³⁷ = 4684369559 is a prime.

It is a super-2 number, since 2×142123323031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142123322987 and 142123323005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142123323011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268761 + ... + 597058.

It is an arithmetic number, because the mean of its divisors is an integer number (35531088250).

Almost surely, 2^142123323031 is an apocalyptic number.

142123323031 is a deficient number, since it is larger than the sum of its proper divisors (1029969).

142123323031 is an equidigital number, since it uses as much as digits as its factorization.

142123323031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029968.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 142123323031 its reverse (130323321241), we get a palindrome (272446644272).

The spelling of 142123323031 in words is "one hundred forty-two billion, one hundred twenty-three million, three hundred twenty-three thousand, thirty-one".