74908143 has 12 divisors (see below), whose sum is σ = 108295200. Its totient is φ = 49895136.

The previous prime is 74908129. The next prime is 74908151. The reversal of 74908143 is 34180947.

It is a happy number.

It is not a de Polignac number, because 74908143 - 2⁹ = 74907631 is a prime.

It is a super-2 number, since 2×74908143² = 11222459775416898, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 74908098 and 74908107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74908123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9883 + ... + 15731.

It is an arithmetic number, because the mean of its divisors is an integer number (9024600).

Almost surely, 2^74908143 is an apocalyptic number.

74908143 is a deficient number, since it is larger than the sum of its proper divisors (33387057).

74908143 is a wasteful number, since it uses less digits than its factorization.

74908143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7278 (or 7275 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 74908143 is about 8654.9490466438. The cubic root of 74908143 is about 421.5440952167.

The spelling of 74908143 in words is "seventy-four million, nine hundred eight thousand, one hundred forty-three".