2021430042 has 24 divisors (see below), whose sum is σ = 4380910560. Its totient is φ = 673633800.

The previous prime is 2021430031. The next prime is 2021430053. The reversal of 2021430042 is 2400341202.

2021430042 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2021430031) and next prime (2021430053).

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 = 2021429997 and 2021430024.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68917 + ... + 93767.

It is an arithmetic number, because the mean of its divisors is an integer number (182537940).

Almost surely, 2^2021430042 is an apocalyptic number.

2021430042 is an abundant number, since it is smaller than the sum of its proper divisors (2359480518).

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

2021430042 is a wasteful number, since it uses less digits than its factorization.

2021430042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29378 (or 29375 counting only the distinct ones).

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

The square root of 2021430042 is about 44960.3163022682. The cubic root of 2021430042 is about 1264.4050991024.

Adding to 2021430042 its reverse (2400341202), we get a palindrome (4421771244).

The spelling of 2021430042 in words is "two billion, twenty-one million, four hundred thirty thousand, forty-two".