68642122 has 16 divisors (see below), whose sum is σ = 106520832. Its totient is φ = 33140160.

The previous prime is 68642113. The next prime is 68642129. The reversal of 68642122 is 22124686.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (68642129) 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, 35833 + ... + 37699.

It is an arithmetic number, because the mean of its divisors is an integer number (6657552).

Almost surely, 2^68642122 is an apocalyptic number.

68642122 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

68642122 is a deficient number, since it is larger than the sum of its proper divisors (37878710).

68642122 is a wasteful number, since it uses less digits than its factorization.

68642122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2493.

The product of its digits is 9216, while the sum is 31.

The square root of 68642122 is about 8285.0541338002. The cubic root of 68642122 is about 409.4462522443.

The spelling of 68642122 in words is "sixty-eight million, six hundred forty-two thousand, one hundred twenty-two".