2621905242 has 32 divisors (see below), whose sum is σ = 5723619840. Its totient is φ = 794086320.

The previous prime is 2621905241. The next prime is 2621905267. The reversal of 2621905242 is 2425091262.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (2621905241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124833 + ... + 144315.

It is an arithmetic number, because the mean of its divisors is an integer number (178863120).

Almost surely, 2^2621905242 is an apocalyptic number.

2621905242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2621905242 is an abundant number, since it is smaller than the sum of its proper divisors (3101714598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2621905242 is a wasteful number, since it uses less digits than its factorization.

2621905242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21538.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 2621905242 is about 51204.5431773393. The cubic root of 2621905242 is about 1378.9197669047.

The spelling of 2621905242 in words is "two billion, six hundred twenty-one million, nine hundred five thousand, two hundred forty-two".