1402214721 has 4 divisors (see below), whose sum is σ = 1869619632. Its totient is φ = 934809812.

The previous prime is 1402214701. The next prime is 1402214731. The reversal of 1402214721 is 1274122041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1402214721 - 2¹⁴ = 1402198337 is a prime.

It is a super-2 number, since 2×1402214721² = 3932412247578215682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1402214691 and 1402214700.

It is not an unprimeable number, because it can be changed into a prime (1402214701) 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, 233702451 + ... + 233702456.

It is an arithmetic number, because the mean of its divisors is an integer number (467404908).

Almost surely, 2^1402214721 is an apocalyptic number.

It is an amenable number.

1402214721 is a deficient number, since it is larger than the sum of its proper divisors (467404911).

1402214721 is an equidigital number, since it uses as much as digits as its factorization.

1402214721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467404910.

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 1402214721 is about 37446.1576266511. The cubic root of 1402214721 is about 1119.2785322179.

Adding to 1402214721 its reverse (1274122041), we get a palindrome (2676336762).

The spelling of 1402214721 in words is "one billion, four hundred two million, two hundred fourteen thousand, seven hundred twenty-one".