10142440202 has 4 divisors (see below), whose sum is σ = 15213660306. Its totient is φ = 5071220100.

The previous prime is 10142440177. The next prime is 10142440219. The reversal of 10142440202 is 20204424101.

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., 9070467121 + 1071973081 = 95239^2 + 32741^2 .

It is a super-2 number, since 2×10142440202² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2535610049 + ... + 2535610052.

Almost surely, 2^10142440202 is an apocalyptic number.

10142440202 is a deficient number, since it is larger than the sum of its proper divisors (5071220104).

10142440202 is an equidigital number, since it uses as much as digits as its factorization.

10142440202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5071220103.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 10142440202 its reverse (20204424101), we get a palindrome (30346864303).

The spelling of 10142440202 in words is "ten billion, one hundred forty-two million, four hundred forty thousand, two hundred two".