74145401 has 4 divisors (see below), whose sum is σ = 80885904. Its totient is φ = 67404900.

The previous prime is 74145341. The next prime is 74145427. The reversal of 74145401 is 10454147.

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 a de Polignac number, because none of the positive numbers 2^k-74145401 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (74145101) 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, 3370235 + ... + 3370256.

It is an arithmetic number, because the mean of its divisors is an integer number (20221476).

Almost surely, 2^74145401 is an apocalyptic number.

It is an amenable number.

74145401 is a deficient number, since it is larger than the sum of its proper divisors (6740503).

74145401 is a wasteful number, since it uses less digits than its factorization.

74145401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6740502.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 74145401 is about 8610.7723811514. The cubic root of 74145401 is about 420.1084394978.

Adding to 74145401 its reverse (10454147), we get a palindrome (84599548).

The spelling of 74145401 in words is "seventy-four million, one hundred forty-five thousand, four hundred one".