1402120423 has 4 divisors (see below), whose sum is σ = 1529585928. Its totient is φ = 1274654920.

The previous prime is 1402120397. The next prime is 1402120451. The reversal of 1402120423 is 3240212041.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1402120423 - 2⁹ = 1402119911 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1402120423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1402120463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63732736 + ... + 63732757.

It is an arithmetic number, because the mean of its divisors is an integer number (382396482).

Almost surely, 2^1402120423 is an apocalyptic number.

1402120423 is a deficient number, since it is larger than the sum of its proper divisors (127465505).

1402120423 is a wasteful number, since it uses less digits than its factorization.

1402120423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127465504.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1402120423 is about 37444.8984909827. The cubic root of 1402120423 is about 1119.2534414118.

Adding to 1402120423 its reverse (3240212041), we get a palindrome (4642332464).

The spelling of 1402120423 in words is "one billion, four hundred two million, one hundred twenty thousand, four hundred twenty-three".