142055491 has 2 divisors, whose sum is σ = 142055492. Its totient is φ = 142055490.

The previous prime is 142055489. The next prime is 142055503. The reversal of 142055491 is 194550241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142055491 - 2¹ = 142055489 is a prime.

Together with 142055489, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (142055401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71027745 + 71027746.

It is an arithmetic number, because the mean of its divisors is an integer number (71027746).

Almost surely, 2^142055491 is an apocalyptic number.

142055491 is a deficient number, since it is larger than the sum of its proper divisors (1).

142055491 is an equidigital number, since it uses as much as digits as its factorization.

142055491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 142055491 is about 11918.7034110259. The cubic root of 142055491 is about 521.7782940607.

The spelling of 142055491 in words is "one hundred forty-two million, fifty-five thousand, four hundred ninety-one".