139962023 has 4 divisors (see below), whose sum is σ = 141534720. Its totient is φ = 138389328.

The previous prime is 139962013. The next prime is 139962049. The reversal of 139962023 is 320269931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320269931 = 1657 ⋅193283.

It is a cyclic number.

It is not a de Polignac number, because 139962023 - 2⁴ = 139962007 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 (139962013) 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, 786215 + ... + 786392.

It is an arithmetic number, because the mean of its divisors is an integer number (35383680).

Almost surely, 2^139962023 is an apocalyptic number.

139962023 is a deficient number, since it is larger than the sum of its proper divisors (1572697).

139962023 is an equidigital number, since it uses as much as digits as its factorization.

139962023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1572696.

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 139962023 is about 11830.5546361952. The cubic root of 139962023 is about 519.2024546656.

The spelling of 139962023 in words is "one hundred thirty-nine million, nine hundred sixty-two thousand, twenty-three".