1402143021 has 8 divisors (see below), whose sum is σ = 2077248960. Its totient is φ = 934761996.

The previous prime is 1402143007. The next prime is 1402143031. The reversal of 1402143021 is 1203412041.

It is not a de Polignac number, because 1402143021 - 2⁶ = 1402142957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1402142985 and 1402143003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1402143031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25965585 + ... + 25965638.

It is an arithmetic number, because the mean of its divisors is an integer number (259656120).

Almost surely, 2^1402143021 is an apocalyptic number.

It is an amenable number.

1402143021 is a deficient number, since it is larger than the sum of its proper divisors (675105939).

1402143021 is an equidigital number, since it uses as much as digits as its factorization.

1402143021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51931232 (or 51931226 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1402143021 is about 37445.2002398171. The cubic root of 1402143021 is about 1119.2594543888.

Adding to 1402143021 its reverse (1203412041), we get a palindrome (2605555062).

The spelling of 1402143021 in words is "one billion, four hundred two million, one hundred forty-three thousand, twenty-one".