202102023442 has 16 divisors (see below), whose sum is σ = 330898573152. Its totient is φ = 91812841920.

The previous prime is 202102023421. The next prime is 202102023449. The reversal of 202102023442 is 244320201202.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (202102023449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2545728 + ... + 2623915.

It is an arithmetic number, because the mean of its divisors is an integer number (20681160822).

Almost surely, 2^202102023442 is an apocalyptic number.

202102023442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

202102023442 is a deficient number, since it is larger than the sum of its proper divisors (128796549710).

202102023442 is a wasteful number, since it uses less digits than its factorization.

202102023442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5171433.

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 202102023442 its reverse (244320201202), we get a palindrome (446422224644).

The spelling of 202102023442 in words is "two hundred two billion, one hundred two million, twenty-three thousand, four hundred forty-two".