1402421045 has 4 divisors (see below), whose sum is σ = 1682905260. Its totient is φ = 1121936832.

The previous prime is 1402421017. The next prime is 1402421087. The reversal of 1402421045 is 5401242041.

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 249071524 + 1153349521 = 15782^2 + 33961^2 .

It is a cyclic number.

It is not a de Polignac number, because 1402421045 - 2¹² = 1402416949 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1402421045.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140242100 + ... + 140242109.

It is an arithmetic number, because the mean of its divisors is an integer number (420726315).

Almost surely, 2^1402421045 is an apocalyptic number.

It is an amenable number.

1402421045 is a deficient number, since it is larger than the sum of its proper divisors (280484215).

1402421045 is an equidigital number, since it uses as much as digits as its factorization.

1402421045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280484214.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 1402421045 is about 37448.9124675203. The cubic root of 1402421045 is about 1119.3334269723. Note that the first 3 decimals are identical.

Adding to 1402421045 its reverse (5401242041), we get a palindrome (6803663086).

The spelling of 1402421045 in words is "one billion, four hundred two million, four hundred twenty-one thousand, forty-five".