67400123 has 8 divisors (see below), whose sum is σ = 77460480. Its totient is φ = 57447720.

The previous prime is 67400117. The next prime is 67400149. The reversal of 67400123 is 32100476.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67400123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67400183) 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, 25643 + ... + 28148.

It is an arithmetic number, because the mean of its divisors is an integer number (9682560).

Almost surely, 2^67400123 is an apocalyptic number.

67400123 is a deficient number, since it is larger than the sum of its proper divisors (10060357).

67400123 is a wasteful number, since it uses less digits than its factorization.

67400123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53977.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 67400123 is about 8209.7577917987. The cubic root of 67400123 is about 406.9617227010.

Adding to 67400123 its reverse (32100476), we get a palindrome (99500599).

The spelling of 67400123 in words is "sixty-seven million, four hundred thousand, one hundred twenty-three".