1402005423 has 32 divisors (see below), whose sum is σ = 2302788096. Its totient is φ = 738857088.

The previous prime is 1402005389. The next prime is 1402005427. The reversal of 1402005423 is 3245002041.

It is not a de Polignac number, because 1402005423 - 2⁸ = 1402005167 is a prime.

It is a super-2 number, since 2×1402005423² = 3931238412242817858, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1402005423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1402005427) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 519265 + ... + 521957.

It is an arithmetic number, because the mean of its divisors is an integer number (71962128).

Almost surely, 2^1402005423 is an apocalyptic number.

1402005423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1402005423 is a deficient number, since it is larger than the sum of its proper divisors (900782673).

1402005423 is a wasteful number, since it uses less digits than its factorization.

1402005423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4623.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 1402005423 is about 37443.3628698064. The cubic root of 1402005423 is about 1119.2228406962. Note that the first 3 decimals are identical.

Adding to 1402005423 its reverse (3245002041), we get a palindrome (4647007464).

The spelling of 1402005423 in words is "one billion, four hundred two million, five thousand, four hundred twenty-three".