5402121 has 4 divisors (see below), whose sum is σ = 7202832. Its totient is φ = 3601412.

The previous prime is 5402113. The next prime is 5402123. The reversal of 5402121 is 1212045.

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 5402121 - 2³ = 5402113 is a prime.

It is a super-2 number, since 2×5402121² = 58365822597282, which contains 22 as substring.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 5402121.

It is not an unprimeable number, because it can be changed into a prime (5402123) 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, 900351 + ... + 900356.

It is an arithmetic number, because the mean of its divisors is an integer number (1800708).

Almost surely, 2^5402121 is an apocalyptic number.

It is an amenable number.

5402121 is a deficient number, since it is larger than the sum of its proper divisors (1800711).

5402121 is a wasteful number, since it uses less digits than its factorization.

5402121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1800710.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 5402121 is about 2324.2463294582. The cubic root of 5402121 is about 175.4640310699.

Adding to 5402121 its reverse (1212045), we get a palindrome (6614166).

The spelling of 5402121 in words is "five million, four hundred two thousand, one hundred twenty-one".