74120151 has 16 divisors (see below), whose sum is σ = 113773824. Its totient is φ = 42043584.

The previous prime is 74120147. The next prime is 74120177. The reversal of 74120151 is 15102147.

It is a happy number.

It is not a de Polignac number, because 74120151 - 2² = 74120147 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74120951) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10005 + ... + 15758.

It is an arithmetic number, because the mean of its divisors is an integer number (7110864).

Almost surely, 2^74120151 is an apocalyptic number.

74120151 is a deficient number, since it is larger than the sum of its proper divisors (39653673).

74120151 is a wasteful number, since it uses less digits than its factorization.

74120151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25910.

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 74120151 is about 8609.3060695970. The cubic root of 74120151 is about 420.0607451822.

Adding to 74120151 its reverse (15102147), we get a palindrome (89222298).

The spelling of 74120151 in words is "seventy-four million, one hundred twenty thousand, one hundred fifty-one".