1042099397 has 2 divisors, whose sum is σ = 1042099398. Its totient is φ = 1042099396.

The previous prime is 1042099393. The next prime is 1042099423. The reversal of 1042099397 is 7939902401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 880961761 + 161137636 = 29681^2 + 12694^2 .

It is an emirp because it is prime and its reverse (7939902401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1042099397 - 2² = 1042099393 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1042099391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521049698 + 521049699.

It is an arithmetic number, because the mean of its divisors is an integer number (521049699).

Almost surely, 2^1042099397 is an apocalyptic number.

It is an amenable number.

1042099397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042099397 is an equidigital number, since it uses as much as digits as its factorization.

1042099397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122472, while the sum is 44.

The square root of 1042099397 is about 32281.5643518092. The cubic root of 1042099397 is about 1013.8406840049.

The spelling of 1042099397 in words is "one billion, forty-two million, ninety-nine thousand, three hundred ninety-seven".