23778142 has 8 divisors (see below), whose sum is σ = 35748000. Its totient is φ = 11862144.

The previous prime is 23778137. The next prime is 23778143. The reversal of 23778142 is 24187732.

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

It is a junction number, because it is equal to n+sod(n) for n = 23778098 and 23778107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23778143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12342 + ... + 14137.

It is an arithmetic number, because the mean of its divisors is an integer number (4468500).

Almost surely, 2^23778142 is an apocalyptic number.

23778142 is a deficient number, since it is larger than the sum of its proper divisors (11969858).

23778142 is a wasteful number, since it uses less digits than its factorization.

23778142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26930.

The product of its digits is 18816, while the sum is 34.

The square root of 23778142 is about 4876.2836258774. The cubic root of 23778142 is about 287.5583427910.

The spelling of 23778142 in words is "twenty-three million, seven hundred seventy-eight thousand, one hundred forty-two".