2142722 has 8 divisors (see below), whose sum is σ = 3243900. Its totient is φ = 1061424.

The previous prime is 2142719. The next prime is 2142739. The reversal of 2142722 is 2272412.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1901641 + 241081 = 1379^2 + 491^2 .

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

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 2142694 and 2142703.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4697 + ... + 5132.

2^2142722 is an apocalyptic number.

2142722 is a deficient number, since it is larger than the sum of its proper divisors (1101178).

2142722 is a wasteful number, since it uses less digits than its factorization.

2142722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9940.

The product of its digits is 448, while the sum is 20.

The square root of 2142722 is about 1463.8039486215. The cubic root of 2142722 is about 128.9204886298.

The spelling of 2142722 in words is "two million, one hundred forty-two thousand, seven hundred twenty-two".