74251242 has 40 divisors (see below), whose sum is σ = 179181156. Its totient is φ = 22845888.

The previous prime is 74251241. The next prime is 74251249. The reversal of 74251242 is 24215247.

It can be written as a sum of positive squares in 2 ways, for example, as 55666521 + 18584721 = 7461^2 + 4311^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (74251241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 15523 + ... + 19734.

Almost surely, 2^74251242 is an apocalyptic number.

74251242 is an abundant number, since it is smaller than the sum of its proper divisors (104929914).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74251242 is a wasteful number, since it uses less digits than its factorization.

74251242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35284 (or 35275 counting only the distinct ones).

The product of its digits is 4480, while the sum is 27.

The square root of 74251242 is about 8616.9160376552. The cubic root of 74251242 is about 420.3082431090.

Adding to 74251242 its reverse (24215247), we get a palindrome (98466489).

It can be divided in two parts, 742 and 51242, that added together give a square (51984 = 228²).

The spelling of 74251242 in words is "seventy-four million, two hundred fifty-one thousand, two hundred forty-two".