2921382742 has 4 divisors (see below), whose sum is σ = 4382074116. Its totient is φ = 1460691370.

The previous prime is 2921382727. The next prime is 2921382769. The reversal of 2921382742 is 2472831292.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 2921382695 and 2921382704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 730345684 + ... + 730345687.

It is an arithmetic number, because the mean of its divisors is an integer number (1095518529).

Almost surely, 2^2921382742 is an apocalyptic number.

2921382742 is a deficient number, since it is larger than the sum of its proper divisors (1460691374).

2921382742 is a wasteful number, since it uses less digits than its factorization.

2921382742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1460691373.

The product of its digits is 96768, while the sum is 40.

The square root of 2921382742 is about 54049.8172244828. The cubic root of 2921382742 is about 1429.5394774431.

The spelling of 2921382742 in words is "two billion, nine hundred twenty-one million, three hundred eighty-two thousand, seven hundred forty-two".