2140021767 has 8 divisors (see below), whose sum is σ = 3072851824. Its totient is φ = 1316936448.

The previous prime is 2140021759. The next prime is 2140021769. The reversal of 2140021767 is 7671200412.

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

It is not a de Polignac number, because 2140021767 - 2³ = 2140021759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2140021769) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27436138 + ... + 27436215.

It is an arithmetic number, because the mean of its divisors is an integer number (384106478).

Almost surely, 2^2140021767 is an apocalyptic number.

2140021767 is a deficient number, since it is larger than the sum of its proper divisors (932830057).

2140021767 is a wasteful number, since it uses less digits than its factorization.

2140021767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54872369.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 2140021767 is about 46260.3692916518. The cubic root of 2140021767 is about 1288.6631117227.

The spelling of 2140021767 in words is "two billion, one hundred forty million, twenty-one thousand, seven hundred sixty-seven".