1442023139 has 2 divisors, whose sum is σ = 1442023140. Its totient is φ = 1442023138.

The previous prime is 1442023127. The next prime is 1442023211. The reversal of 1442023139 is 9313202441.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1442023139 - 2²⁴ = 1425245923 is a prime.

It is a super-2 number, since 2×1442023139² = 4158861466822826642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1442623139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 721011569 + 721011570.

It is an arithmetic number, because the mean of its divisors is an integer number (721011570).

Almost surely, 2^1442023139 is an apocalyptic number.

1442023139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1442023139 is an equidigital number, since it uses as much as digits as its factorization.

1442023139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 1442023139 is about 37973.9797624637. The cubic root of 1442023139 is about 1129.7718334844.

The spelling of 1442023139 in words is "one billion, four hundred forty-two million, twenty-three thousand, one hundred thirty-nine".