2161214242 has 16 divisors (see below), whose sum is σ = 3722666400. Its totient is φ = 930666240.

The previous prime is 2161214239. The next prime is 2161214257. The reversal of 2161214242 is 2424121612.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2584767 + ... + 2585602.

It is an arithmetic number, because the mean of its divisors is an integer number (232666650).

Almost surely, 2^2161214242 is an apocalyptic number.

2161214242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2161214242 is a deficient number, since it is larger than the sum of its proper divisors (1561452158).

2161214242 is a wasteful number, since it uses less digits than its factorization.

2161214242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5170401.

The product of its digits is 1536, while the sum is 25.

The square root of 2161214242 is about 46488.8614831553. The cubic root of 2161214242 is about 1292.9029913381.

Adding to 2161214242 its reverse (2424121612), we get a palindrome (4585335854).

The spelling of 2161214242 in words is "two billion, one hundred sixty-one million, two hundred fourteen thousand, two hundred forty-two".