7408121 has 4 divisors (see below), whose sum is σ = 8466432. Its totient is φ = 6349812.

The previous prime is 7408117. The next prime is 7408127. The reversal of 7408121 is 1218047.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1218047 = 577 ⋅2111.

It is not a de Polignac number, because 7408121 - 2² = 7408117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7408127) 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, 529145 + ... + 529158.

It is an arithmetic number, because the mean of its divisors is an integer number (2116608).

Almost surely, 2^7408121 is an apocalyptic number.

It is an amenable number.

7408121 is a deficient number, since it is larger than the sum of its proper divisors (1058311).

7408121 is a wasteful number, since it uses less digits than its factorization.

7408121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1058310.

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 7408121 is about 2721.7863619322. The cubic root of 7408121 is about 194.9407753521.

The spelling of 7408121 in words is "seven million, four hundred eight thousand, one hundred twenty-one".