142240023 has 32 divisors (see below), whose sum is σ = 223200000. Its totient is φ = 89276256.

The previous prime is 142240009. The next prime is 142240039. The reversal of 142240023 is 320042241.

142240023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 142240023 - 2¹⁴ = 142223639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142239978 and 142240005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142240123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91053 + ... + 92601.

It is an arithmetic number, because the mean of its divisors is an integer number (6975000).

Almost surely, 2^142240023 is an apocalyptic number.

142240023 is a deficient number, since it is larger than the sum of its proper divisors (80959977).

142240023 is a wasteful number, since it uses less digits than its factorization.

142240023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1756 (or 1750 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 142240023 is about 11926.4421769445. The cubic root of 142240023 is about 522.0041286501.

Adding to 142240023 its reverse (320042241), we get a palindrome (462282264).

The spelling of 142240023 in words is "one hundred forty-two million, two hundred forty thousand, twenty-three".