2142403020 has 60 divisors (see below), whose sum is σ = 6720802704. Its totient is φ = 571307040.

The previous prime is 2142403009. The next prime is 2142403027. The reversal of 2142403020 is 203042412.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2142402984 and 2142403002.

It is not an unprimeable number, because it can be changed into a prime (2142403027) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 659616 + ... + 662855.

Almost surely, 2^2142403020 is an apocalyptic number.

2142403020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2142403020 is an abundant number, since it is smaller than the sum of its proper divisors (4578399684).

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

2142403020 is a wasteful number, since it uses less digits than its factorization.

2142403020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322492 (or 1322481 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 2142403020 is about 46286.0996412530. The cubic root of 2142403020 is about 1289.1409098883.

Adding to 2142403020 its reverse (203042412), we get a palindrome (2345445432).

The spelling of 2142403020 in words is "two billion, one hundred forty-two million, four hundred three thousand, twenty".