142263391 has 2 divisors, whose sum is σ = 142263392. Its totient is φ = 142263390.

The previous prime is 142263343. The next prime is 142263413. The reversal of 142263391 is 193362241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 142263391 - 2²⁷ = 8045663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142263301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71131695 + 71131696.

It is an arithmetic number, because the mean of its divisors is an integer number (71131696).

Almost surely, 2^142263391 is an apocalyptic number.

142263391 is a deficient number, since it is larger than the sum of its proper divisors (1).

142263391 is an equidigital number, since it uses as much as digits as its factorization.

142263391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 31.

The square root of 142263391 is about 11927.4218085888. The cubic root of 142263391 is about 522.0327130206.

The spelling of 142263391 in words is "one hundred forty-two million, two hundred sixty-three thousand, three hundred ninety-one".