74397142 has 4 divisors (see below), whose sum is σ = 111595716. Its totient is φ = 37198570.

The previous prime is 74397101. The next prime is 74397149. The reversal of 74397142 is 24179347.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24179347 = 2459 ⋅9833.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74397149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18599284 + ... + 18599287.

It is an arithmetic number, because the mean of its divisors is an integer number (27898929).

Almost surely, 2^74397142 is an apocalyptic number.

74397142 is a deficient number, since it is larger than the sum of its proper divisors (37198574).

74397142 is a wasteful number, since it uses less digits than its factorization.

74397142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37198573.

The product of its digits is 42336, while the sum is 37.

The square root of 74397142 is about 8625.3777888276. The cubic root of 74397142 is about 420.5833579277.

The spelling of 74397142 in words is "seventy-four million, three hundred ninety-seven thousand, one hundred forty-two".