2641620042 has 12 divisors (see below), whose sum is σ = 5723510130. Its totient is φ = 880540008.

The previous prime is 2641620031. The next prime is 2641620043. The reversal of 2641620042 is 2400261462.

2641620042 is a `hidden beast` number, since 2 + 6 + 416 + 200 + 42 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1733140161 + 908479881 = 41631^2 + 30141^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2641619988 and 2641620015.

It is not an unprimeable number, because it can be changed into a prime (2641620043) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 73378317 + ... + 73378352.

Almost surely, 2^2641620042 is an apocalyptic number.

2641620042 is an abundant number, since it is smaller than the sum of its proper divisors (3081890088).

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

2641620042 is a wasteful number, since it uses less digits than its factorization.

2641620042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146756677 (or 146756674 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 2641620042 is about 51396.6929091746. The cubic root of 2641620042 is about 1382.3672946555.

The spelling of 2641620042 in words is "two billion, six hundred forty-one million, six hundred twenty thousand, forty-two".