1402257823 has 2 divisors, whose sum is σ = 1402257824. Its totient is φ = 1402257822.

The previous prime is 1402257799. The next prime is 1402257827. The reversal of 1402257823 is 3287522041.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1402257823 - 2¹⁷ = 1402126751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1402257827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 701128911 + 701128912.

It is an arithmetic number, because the mean of its divisors is an integer number (701128912).

Almost surely, 2^1402257823 is an apocalyptic number.

1402257823 is a deficient number, since it is larger than the sum of its proper divisors (1).

1402257823 is an equidigital number, since it uses as much as digits as its factorization.

1402257823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 1402257823 is about 37446.7331418910. The cubic root of 1402257823 is about 1119.2900004209.

Adding to 1402257823 its reverse (3287522041), we get a palindrome (4689779864).

The spelling of 1402257823 in words is "one billion, four hundred two million, two hundred fifty-seven thousand, eight hundred twenty-three".