7401121 has 8 divisors (see below), whose sum is σ = 9109184. Its totient is φ = 5855760.

The previous prime is 7401109. The next prime is 7401131. The reversal of 7401121 is 1211047.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7401121 - 2⁷ = 7400993 is a prime.

It is the 2721-st Hogben number.

7401121 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 7401095 and 7401104.

It is not an unprimeable number, because it can be changed into a prime (7401131) by changing a digit.

It is a nontrivial repunit in base 2720.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40575 + ... + 40756.

It is an arithmetic number, because the mean of its divisors is an integer number (1138648).

Almost surely, 2^7401121 is an apocalyptic number.

It is an amenable number.

7401121 is a deficient number, since it is larger than the sum of its proper divisors (1708063).

7401121 is a wasteful number, since it uses less digits than its factorization.

7401121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81351.

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 7401121 is about 2720.5001378423. The cubic root of 7401121 is about 194.8793555734.

Adding to 7401121 its reverse (1211047), we get a palindrome (8612168).

The spelling of 7401121 in words is "seven million, four hundred one thousand, one hundred twenty-one".