2135697942 has 128 divisors (see below), whose sum is σ = 5300748288. Its totient is φ = 560649600.

The previous prime is 2135697937. The next prime is 2135698003. The reversal of 2135697942 is 2497965312.

2135697942 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2135697942² = 9122411398926070728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2135697891 and 2135697900.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2070967 + ... + 2071997.

It is an arithmetic number, because the mean of its divisors is an integer number (41412096).

Almost surely, 2^2135697942 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2135697942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2650374144).

2135697942 is an abundant number, since it is smaller than the sum of its proper divisors (3165050346).

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

2135697942 is a wasteful number, since it uses less digits than its factorization.

2135697942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1154.

The product of its digits is 816480, while the sum is 48.

The square root of 2135697942 is about 46213.6120856182. The cubic root of 2135697942 is about 1287.7946298041.

The spelling of 2135697942 in words is "two billion, one hundred thirty-five million, six hundred ninety-seven thousand, nine hundred forty-two".