1402021 has 4 divisors (see below), whose sum is σ = 1415232. Its totient is φ = 1388812.

The previous prime is 1402019. The next prime is 1402031. The reversal of 1402021 is 1202041.

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 1402021 - 2¹ = 1402019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1401989 and 1402007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1402031) 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, 6445 + ... + 6658.

It is an arithmetic number, because the mean of its divisors is an integer number (353808).

2^1402021 is an apocalyptic number.

It is an amenable number.

1402021 is a deficient number, since it is larger than the sum of its proper divisors (13211).

1402021 is a wasteful number, since it uses less digits than its factorization.

1402021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13210.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 1402021 is about 1184.0696770038. The cubic root of 1402021 is about 111.9226985728.

Adding to 1402021 its reverse (1202041), we get a palindrome (2604062).

It can be divided in two parts, 14020 and 21, that added together give a palindrome (14041).

The spelling of 1402021 in words is "one million, four hundred two thousand, twenty-one".