210237753440042 has 4 divisors (see below), whose sum is σ = 315356630160066. Its totient is φ = 105118876720020.

The previous prime is 210237753440027. The next prime is 210237753440047. The reversal of 210237753440042 is 240044357732012.

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

It can be written as a sum of positive squares in only one way, i.e., 190730435049361 + 19507318390681 = 13810519^2 + 4416709^2 .

It is a junction number, because it is equal to n+sod(n) for n = 210237753439975 and 210237753440002.

It is not an unprimeable number, because it can be changed into a prime (210237753440047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52559438360009 + ... + 52559438360012.

Almost surely, 2^{210237753440042} is an apocalyptic number.

210237753440042 is a deficient number, since it is larger than the sum of its proper divisors (105118876720024).

210237753440042 is a wasteful number, since it uses less digits than its factorization.

210237753440042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105118876720023.

The product of its (nonzero) digits is 1128960, while the sum is 44.

The spelling of 210237753440042 in words is "two hundred ten trillion, two hundred thirty-seven billion, seven hundred fifty-three million, four hundred forty thousand, forty-two".