68742124 has 24 divisors (see below), whose sum is σ = 136942848. Its totient is φ = 29887440.

The previous prime is 68742083. The next prime is 68742127. The reversal of 68742124 is 42124786.

It is a happy number.

It is a super-2 number, since 2×68742124² = 9450959224062752, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 68742124.

It is not an unprimeable number, because it can be changed into a prime (68742127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32952 + ... + 34975.

It is an arithmetic number, because the mean of its divisors is an integer number (5705952).

Almost surely, 2^68742124 is an apocalyptic number.

It is an amenable number.

68742124 is a deficient number, since it is larger than the sum of its proper divisors (68200724).

68742124 is a wasteful number, since it uses less digits than its factorization.

68742124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67965 (or 67963 counting only the distinct ones).

The product of its digits is 21504, while the sum is 34.

The square root of 68742124 is about 8291.0870216154. The cubic root of 68742124 is about 409.6449911288.

It can be divided in two parts, 6874 and 2124, that added together give a palindrome (8998).

The spelling of 68742124 in words is "sixty-eight million, seven hundred forty-two thousand, one hundred twenty-four".