1042210139 has 2 divisors, whose sum is σ = 1042210140. Its totient is φ = 1042210138.

The previous prime is 1042210087. The next prime is 1042210153. The reversal of 1042210139 is 9310122401.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1042210139 is a prime.

It is not a weakly prime, because it can be changed into another prime (1042210159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521105069 + 521105070.

It is an arithmetic number, because the mean of its divisors is an integer number (521105070).

Almost surely, 2^1042210139 is an apocalyptic number.

1042210139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042210139 is an equidigital number, since it uses as much as digits as its factorization.

1042210139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 1042210139 is about 32283.2795576905. The cubic root of 1042210139 is about 1013.8765957322.

The spelling of 1042210139 in words is "one billion, forty-two million, two hundred ten thousand, one hundred thirty-nine".