210140435542 has 4 divisors (see below), whose sum is σ = 315210653316. Its totient is φ = 105070217770.

The previous prime is 210140435501. The next prime is 210140435543. The reversal of 210140435542 is 245534041012.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210140435543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52535108884 + ... + 52535108887.

It is an arithmetic number, because the mean of its divisors is an integer number (78802663329).

Almost surely, 2^210140435542 is an apocalyptic number.

210140435542 is a deficient number, since it is larger than the sum of its proper divisors (105070217774).

210140435542 is a wasteful number, since it uses less digits than its factorization.

210140435542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105070217773.

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 210140435542 its reverse (245534041012), we get a palindrome (455674476554).

The spelling of 210140435542 in words is "two hundred ten billion, one hundred forty million, four hundred thirty-five thousand, five hundred forty-two".