1042402069 has 2 divisors, whose sum is σ = 1042402070. Its totient is φ = 1042402068.

The previous prime is 1042402043. The next prime is 1042402079. The reversal of 1042402069 is 9602042401.

1042402069 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1007237169 + 35164900 = 31737^2 + 5930^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1042402069 is a prime.

It is a super-2 number, since 2×1042402069² = 2173204146910961522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1042402019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521201034 + 521201035.

It is an arithmetic number, because the mean of its divisors is an integer number (521201035).

Almost surely, 2^1042402069 is an apocalyptic number.

It is an amenable number.

1042402069 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042402069 is an equidigital number, since it uses as much as digits as its factorization.

1042402069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 1042402069 is about 32286.2520122730. The cubic root of 1042402069 is about 1013.9388293080.

The spelling of 1042402069 in words is "one billion, forty-two million, four hundred two thousand, sixty-nine".