210340259742 has 32 divisors (see below), whose sum is σ = 425172996864. Its totient is φ = 69365203200.

The previous prime is 210340259681. The next prime is 210340259743. The reversal of 210340259742 is 247952043012.

It is a self number, because there is not a number n which added to its sum of digits gives 210340259742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210340259743) 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, 1559617 + ... + 1689107.

It is an arithmetic number, because the mean of its divisors is an integer number (13286656152).

Almost surely, 2^210340259742 is an apocalyptic number.

210340259742 is an abundant number, since it is smaller than the sum of its proper divisors (214832737122).

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

210340259742 is a wasteful number, since it uses less digits than its factorization.

210340259742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132384.

The product of its (nonzero) digits is 120960, while the sum is 39.

The spelling of 210340259742 in words is "two hundred ten billion, three hundred forty million, two hundred fifty-nine thousand, seven hundred forty-two".