142626091 has 2 divisors, whose sum is σ = 142626092. Its totient is φ = 142626090.

The previous prime is 142626067. The next prime is 142626137. The reversal of 142626091 is 190626241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142626091 - 2⁷ = 142625963 is a prime.

It is not a weakly prime, because it can be changed into another prime (142626041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71313045 + 71313046.

It is an arithmetic number, because the mean of its divisors is an integer number (71313046).

Almost surely, 2^142626091 is an apocalyptic number.

142626091 is a deficient number, since it is larger than the sum of its proper divisors (1).

142626091 is an equidigital number, since it uses as much as digits as its factorization.

142626091 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 31.

The square root of 142626091 is about 11942.6165893409. The cubic root of 142626091 is about 522.4759767043.

The spelling of 142626091 in words is "one hundred forty-two million, six hundred twenty-six thousand, ninety-one".