23121402 has 8 divisors (see below), whose sum is σ = 46242816. Its totient is φ = 7707132.

The previous prime is 23121391. The next prime is 23121403. The reversal of 23121402 is 20412132.

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

23121402 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (23121403) 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, 1926778 + ... + 1926789.

It is an arithmetic number, because the mean of its divisors is an integer number (5780352).

Almost surely, 2^23121402 is an apocalyptic number.

23121402 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

23121402 is a wasteful number, since it uses less digits than its factorization.

23121402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3853572.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 23121402 is about 4808.4718986389. The cubic root of 23121402 is about 284.8861841624.

Adding to 23121402 its reverse (20412132), we get a palindrome (43533534).

The spelling of 23121402 in words is "twenty-three million, one hundred twenty-one thousand, four hundred two".