74140142 has 4 divisors (see below), whose sum is σ = 111210216. Its totient is φ = 37070070.

The previous prime is 74140139. The next prime is 74140181. The reversal of 74140142 is 24104147.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24104147 = 17 ⋅1417891.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18535034 + ... + 18535037.

It is an arithmetic number, because the mean of its divisors is an integer number (27802554).

Almost surely, 2^74140142 is an apocalyptic number.

74140142 is a deficient number, since it is larger than the sum of its proper divisors (37070074).

74140142 is a wasteful number, since it uses less digits than its factorization.

74140142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37070073.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 74140142 is about 8610.4670024337. The cubic root of 74140142 is about 420.0985067508.

Adding to 74140142 its reverse (24104147), we get a palindrome (98244289).

The spelling of 74140142 in words is "seventy-four million, one hundred forty thousand, one hundred forty-two".