2421556742 has 16 divisors (see below), whose sum is σ = 3973914000. Its totient is φ = 1097550240.

The previous prime is 2421556733. The next prime is 2421556757. The reversal of 2421556742 is 2476551242.

It is a junction number, because it is equal to n+sod(n) for n = 2421556696 and 2421556705.

It is a congruent number.

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, 150017 + ... + 165372.

It is an arithmetic number, because the mean of its divisors is an integer number (248369625).

Almost surely, 2^2421556742 is an apocalyptic number.

2421556742 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2421556742 is a deficient number, since it is larger than the sum of its proper divisors (1552357258).

2421556742 is a wasteful number, since it uses less digits than its factorization.

2421556742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315751.

The product of its digits is 134400, while the sum is 38.

The square root of 2421556742 is about 49209.3156018248. The cubic root of 2421556742 is about 1342.8625118380.

The spelling of 2421556742 in words is "two billion, four hundred twenty-one million, five hundred fifty-six thousand, seven hundred forty-two".