2101434140 has 48 divisors (see below), whose sum is σ = 4830420000. Its totient is φ = 763188480.

The previous prime is 2101434133. The next prime is 2101434157. The reversal of 2101434140 is 414341012.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50390 + ... + 82109.

It is an arithmetic number, because the mean of its divisors is an integer number (100633750).

Almost surely, 2^2101434140 is an apocalyptic number.

2101434140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2101434140 is an abundant number, since it is smaller than the sum of its proper divisors (2728985860).

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

2101434140 is a wasteful number, since it uses less digits than its factorization.

2101434140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132582 (or 132580 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 2101434140 is about 45841.4020291701. The cubic root of 2101434140 is about 1280.8706113196.

Adding to 2101434140 its reverse (414341012), we get a palindrome (2515775152).

The spelling of 2101434140 in words is "two billion, one hundred one million, four hundred thirty-four thousand, one hundred forty".