74154121 has 2 divisors, whose sum is σ = 74154122. Its totient is φ = 74154120.

The previous prime is 74154107. The next prime is 74154133. The reversal of 74154121 is 12145147.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49154121 + 25000000 = 7011^2 + 5000^2 .

It is a cyclic number.

It is not a de Polignac number, because 74154121 - 2⁵ = 74154089 is a prime.

It is a super-2 number, since 2×74154121² = 10997667322565282, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (74154161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37077060 + 37077061.

It is an arithmetic number, because the mean of its divisors is an integer number (37077061).

Almost surely, 2^74154121 is an apocalyptic number.

It is an amenable number.

74154121 is a deficient number, since it is larger than the sum of its proper divisors (1).

74154121 is an equidigital number, since it uses as much as digits as its factorization.

74154121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1120, while the sum is 25.

The square root of 74154121 is about 8611.2787087633. The cubic root of 74154121 is about 420.1249080490.

Adding to 74154121 its reverse (12145147), we get a palindrome (86299268).

The spelling of 74154121 in words is "seventy-four million, one hundred fifty-four thousand, one hundred twenty-one".