1402420044 has 24 divisors (see below), whose sum is σ = 3280097968. Its totient is φ = 466361280.

The previous prime is 1402420007. The next prime is 1402420057. The reversal of 1402420044 is 4400242041.

It is a self number, because there is not a number n which added to its sum of digits gives 1402420044.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133747 + ... + 143850.

Almost surely, 2^1402420044 is an apocalyptic number.

It is an amenable number.

1402420044 is an abundant number, since it is smaller than the sum of its proper divisors (1877677924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1402420044 is a wasteful number, since it uses less digits than its factorization.

1402420044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278025 (or 278023 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 1402420044 is about 37448.8991026439. The cubic root of 1402420044 is about 1119.3331606584. Note that the first 3 decimals are identical.

Adding to 1402420044 its reverse (4400242041), we get a palindrome (5802662085).

The spelling of 1402420044 in words is "one billion, four hundred two million, four hundred twenty thousand, forty-four".