1402232905 has 4 divisors (see below), whose sum is σ = 1682679492. Its totient is φ = 1121786320.

The previous prime is 1402232903. The next prime is 1402232941. The reversal of 1402232905 is 5092322041.

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

It can be written as a sum of positive squares in 2 ways, for example, as 910590976 + 491641929 = 30176^2 + 22173^2 .

It is not a de Polignac number, because 1402232905 - 2¹ = 1402232903 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1402232903) 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, 140223286 + ... + 140223295.

It is an arithmetic number, because the mean of its divisors is an integer number (420669873).

Almost surely, 2^1402232905 is an apocalyptic number.

It is an amenable number.

1402232905 is a deficient number, since it is larger than the sum of its proper divisors (280446587).

1402232905 is an equidigital number, since it uses as much as digits as its factorization.

1402232905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280446586.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 1402232905 is about 37446.4004278115. The cubic root of 1402232905 is about 1119.2833704862.

Adding to 1402232905 its reverse (5092322041), we get a palindrome (6494554946).

The spelling of 1402232905 in words is "one billion, four hundred two million, two hundred thirty-two thousand, nine hundred five".