2142961 has 4 divisors (see below), whose sum is σ = 2156272. Its totient is φ = 2129652.

The previous prime is 2142941. The next prime is 2142967. The reversal of 2142961 is 1692412.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2142961 - 2⁹ = 2142449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2142967) 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, 6411 + ... + 6736.

It is an arithmetic number, because the mean of its divisors is an integer number (539068).

2^2142961 is an apocalyptic number.

It is an amenable number.

2142961 is a deficient number, since it is larger than the sum of its proper divisors (13311).

2142961 is a wasteful number, since it uses less digits than its factorization.

2142961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13310.

The product of its digits is 864, while the sum is 25.

The square root of 2142961 is about 1463.8855829606. The cubic root of 2142961 is about 128.9252817312.

The spelling of 2142961 in words is "two million, one hundred forty-two thousand, nine hundred sixty-one".