2021031242 has 32 divisors (see below), whose sum is σ = 3164906304. Its totient is φ = 967075200.

The previous prime is 2021031211. The next prime is 2021031251. The reversal of 2021031242 is 2421301202.

It is a super-2 number, since 2×2021031242² = 8169134562280125128, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2021031242.

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, 1725317 + ... + 1726487.

It is an arithmetic number, because the mean of its divisors is an integer number (98903322).

Almost surely, 2^2021031242 is an apocalyptic number.

2021031242 is a deficient number, since it is larger than the sum of its proper divisors (1143875062).

2021031242 is a wasteful number, since it uses less digits than its factorization.

2021031242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2021031242 is about 44955.8810613250. The cubic root of 2021031242 is about 1264.3219437937.

Adding to 2021031242 its reverse (2421301202), we get a palindrome (4442332444).

The spelling of 2021031242 in words is "two billion, twenty-one million, thirty-one thousand, two hundred forty-two".