2140423428 has 96 divisors (see below), whose sum is σ = 5992519680. Its totient is φ = 585959040.

The previous prime is 2140423421. The next prime is 2140423429. The reversal of 2140423428 is 8243240412.

It is a super-2 number, since 2×2140423428² = 9162824902262542368, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2140423395 and 2140423404.

It is not an unprimeable number, because it can be changed into a prime (2140423421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67383 + ... + 93921.

It is an arithmetic number, because the mean of its divisors is an integer number (62422080).

Almost surely, 2^2140423428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2140423428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2996259840).

2140423428 is an abundant number, since it is smaller than the sum of its proper divisors (3852096252).

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

2140423428 is a wasteful number, since it uses less digits than its factorization.

2140423428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26617 (or 26615 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 30.

The square root of 2140423428 is about 46264.7103957217. The cubic root of 2140423428 is about 1288.7437298022.

It can be divided in two parts, 214042 and 3428, that added together give a triangular number (217470 = T₆₅₉).

The spelling of 2140423428 in words is "two billion, one hundred forty million, four hundred twenty-three thousand, four hundred twenty-eight".