2103949421 has 16 divisors (see below), whose sum is σ = 2420060160. Its totient is φ = 1791765360.

The previous prime is 2103949411. The next prime is 2103949423. The reversal of 2103949421 is 1249493012.

It is not a de Polignac number, because 2103949421 - 2¹⁰ = 2103948397 is a prime.

It is a super-2 number, since 2×2103949421² = 8853206332252470482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2103949423) 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, 793520 + ... + 796166.

It is an arithmetic number, because the mean of its divisors is an integer number (151253760).

Almost surely, 2^2103949421 is an apocalyptic number.

It is an amenable number.

2103949421 is a deficient number, since it is larger than the sum of its proper divisors (316110739).

2103949421 is a wasteful number, since it uses less digits than its factorization.

2103949421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3344.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 2103949421 is about 45868.8284241052. The cubic root of 2103949421 is about 1281.3814473714.

The spelling of 2103949421 in words is "two billion, one hundred three million, nine hundred forty-nine thousand, four hundred twenty-one".