142023331 has 4 divisors (see below), whose sum is σ = 145045152. Its totient is φ = 139001512.

The previous prime is 142023319. The next prime is 142023337. The reversal of 142023331 is 133320241.

142023331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 142023331 - 2⁹ = 142022819 is a prime.

It is a super-2 number, since 2×142023331² = 40341253096671122, 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 = 142023299 and 142023308.

It is not an unprimeable number, because it can be changed into a prime (142023337) 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, 1510840 + ... + 1510933.

It is an arithmetic number, because the mean of its divisors is an integer number (36261288).

Almost surely, 2^142023331 is an apocalyptic number.

142023331 is a deficient number, since it is larger than the sum of its proper divisors (3021821).

142023331 is an equidigital number, since it uses as much as digits as its factorization.

142023331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3021820.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 142023331 is about 11917.3541946189. The cubic root of 142023331 is about 521.7389158893.

Adding to 142023331 its reverse (133320241), we get a palindrome (275343572).

The spelling of 142023331 in words is "one hundred forty-two million, twenty-three thousand, three hundred thirty-one".