1402311021 has 8 divisors (see below), whose sum is σ = 1870350720. Its totient is φ = 934572672.

The previous prime is 1402311019. The next prime is 1402311023. The reversal of 1402311021 is 1201132041.

It is an interprime number because it is at equal distance from previous prime (1402311019) and next prime (1402311023).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1402311021 - 2¹ = 1402311019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1402311023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64245 + ... + 83258.

It is an arithmetic number, because the mean of its divisors is an integer number (233793840).

Almost surely, 2^1402311021 is an apocalyptic number.

It is an amenable number.

1402311021 is a deficient number, since it is larger than the sum of its proper divisors (468039699).

1402311021 is a wasteful number, since it uses less digits than its factorization.

1402311021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150675.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1402311021 is about 37447.4434507885. The cubic root of 1402311021 is about 1119.3041545552.

Adding to 1402311021 its reverse (1201132041), we get a palindrome (2603443062).

The spelling of 1402311021 in words is "one billion, four hundred two million, three hundred eleven thousand, twenty-one".