202012542 has 40 divisors (see below), whose sum is σ = 472347216. Its totient is φ = 64408608.

The previous prime is 202012529. The next prime is 202012543. The reversal of 202012542 is 245210202.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202012543) 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, 23383 + ... + 30834.

Almost surely, 2^202012542 is an apocalyptic number.

202012542 is an abundant number, since it is smaller than the sum of its proper divisors (270334674).

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

202012542 is a wasteful number, since it uses less digits than its factorization.

202012542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54254 (or 54245 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 202012542 is about 14213.1116227236. Note that the first 3 decimals coincide. The cubic root of 202012542 is about 586.7585741140.

Adding to 202012542 its reverse (245210202), we get a palindrome (447222744).

The spelling of 202012542 in words is "two hundred two million, twelve thousand, five hundred forty-two".