2121876742 has 8 divisors (see below), whose sum is σ = 3189195000. Its totient is φ = 1058811744.

The previous prime is 2121876739. The next prime is 2121876749. The reversal of 2121876742 is 2476781212.

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

It is a junction number, because it is equal to n+sod(n) for n = 2121876695 and 2121876704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121876749) 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, 1062067 + ... + 1064062.

It is an arithmetic number, because the mean of its divisors is an integer number (398649375).

Almost surely, 2^2121876742 is an apocalyptic number.

2121876742 is a deficient number, since it is larger than the sum of its proper divisors (1067318258).

2121876742 is a wasteful number, since it uses less digits than its factorization.

2121876742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2126630.

The product of its digits is 75264, while the sum is 40.

The square root of 2121876742 is about 46063.8333402682. The cubic root of 2121876742 is about 1285.0106217233.

The spelling of 2121876742 in words is "two billion, one hundred twenty-one million, eight hundred seventy-six thousand, seven hundred forty-two".