1602421 has 4 divisors (see below), whose sum is σ = 1654144. Its totient is φ = 1550700.

The previous prime is 1602407. The next prime is 1602427. The reversal of 1602421 is 1242061.

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 1602421 - 2⁵ = 1602389 is a prime.

It is a super-2 number, since 2×1602421² = 5135506122482, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1602395 and 1602404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1602427) 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, 25815 + ... + 25876.

It is an arithmetic number, because the mean of its divisors is an integer number (413536).

2^1602421 is an apocalyptic number.

It is an amenable number.

1602421 is a deficient number, since it is larger than the sum of its proper divisors (51723).

1602421 is an equidigital number, since it uses as much as digits as its factorization.

1602421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51722.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1602421 is about 1265.8676866087. The cubic root of 1602421 is about 117.0196718573.

Adding to 1602421 its reverse (1242061), we get a palindrome (2844482).

The spelling of 1602421 in words is "one million, six hundred two thousand, four hundred twenty-one".