202123063542 has 16 divisors (see below), whose sum is σ = 404267967792. Its totient is φ = 67370714400.

The previous prime is 202123063517. The next prime is 202123063547. The reversal of 202123063542 is 245360321202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202123063547) 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, 788473 + ... + 1012884.

It is an arithmetic number, because the mean of its divisors is an integer number (25266747987).

Almost surely, 2^202123063542 is an apocalyptic number.

202123063542 is an abundant number, since it is smaller than the sum of its proper divisors (202144904250).

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

202123063542 is a wasteful number, since it uses less digits than its factorization.

202123063542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1820063.

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 202123063542 its reverse (245360321202), we get a palindrome (447483384744).

The spelling of 202123063542 in words is "two hundred two billion, one hundred twenty-three million, sixty-three thousand, five hundred forty-two".