1420021402 has 16 divisors (see below), whose sum is σ = 2202234624. Its totient is φ = 686016000.

The previous prime is 1420021391. The next prime is 1420021469. The reversal of 1420021402 is 2041200241.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21877 + ... + 57607.

It is an arithmetic number, because the mean of its divisors is an integer number (137639664).

Almost surely, 2^1420021402 is an apocalyptic number.

1420021402 is a deficient number, since it is larger than the sum of its proper divisors (782213222).

1420021402 is a wasteful number, since it uses less digits than its factorization.

1420021402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36405.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 1420021402 is about 37683.1713368182. The cubic root of 1420021402 is about 1123.9965114526.

Adding to 1420021402 its reverse (2041200241), we get a palindrome (3461221643).

The spelling of 1420021402 in words is "one billion, four hundred twenty million, twenty-one thousand, four hundred two".