13421961 has 24 divisors (see below), whose sum is σ = 23325120. Its totient is φ = 7265376.

The previous prime is 13421951. The next prime is 13421981. The reversal of 13421961 is 16912431.

13421961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13421961 - 2⁶ = 13421897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13421951) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4410 + ... + 6803.

It is an arithmetic number, because the mean of its divisors is an integer number (971880).

Almost surely, 2^13421961 is an apocalyptic number.

It is an amenable number.

13421961 is a deficient number, since it is larger than the sum of its proper divisors (9903159).

13421961 is a wasteful number, since it uses less digits than its factorization.

13421961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11245 (or 11242 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 13421961 is about 3663.5994595479. The cubic root of 13421961 is about 237.6504590483.

The spelling of 13421961 in words is "thirteen million, four hundred twenty-one thousand, nine hundred sixty-one".