2562121642 has 8 divisors (see below), whose sum is σ = 3843412416. Its totient is φ = 1280984172.

The previous prime is 2562121637. The next prime is 2562121649. The reversal of 2562121642 is 2461212652.

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

It is not an unprimeable number, because it can be changed into a prime (2562121649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23233 + ... + 75259.

It is an arithmetic number, because the mean of its divisors is an integer number (480426552).

Almost surely, 2^2562121642 is an apocalyptic number.

2562121642 is a deficient number, since it is larger than the sum of its proper divisors (1281290774).

2562121642 is a wasteful number, since it uses less digits than its factorization.

2562121642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76652.

The product of its digits is 11520, while the sum is 31.

The square root of 2562121642 is about 50617.4045363845. The cubic root of 2562121642 is about 1368.3585651545.

The spelling of 2562121642 in words is "two billion, five hundred sixty-two million, one hundred twenty-one thousand, six hundred forty-two".