42206651540 has 24 divisors (see below), whose sum is σ = 88648531272. Its totient is φ = 16879886720.

The previous prime is 42206651521. The next prime is 42206651549. The reversal of 42206651540 is 4515660224.

42206651540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 6634428304 + 35572223236 = 81452^2 + 188606^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 42206651540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42206651549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46331 + ... + 294210.

It is an arithmetic number, because the mean of its divisors is an integer number (3693688803).

Almost surely, 2^42206651540 is an apocalyptic number.

It is an amenable number.

42206651540 is an abundant number, since it is smaller than the sum of its proper divisors (46441879732).

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

42206651540 is a wasteful number, since it uses less digits than its factorization.

42206651540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346747 (or 346745 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

The spelling of 42206651540 in words is "forty-two billion, two hundred six million, six hundred fifty-one thousand, five hundred forty".