250021340042 has 4 divisors (see below), whose sum is σ = 375032010066. Its totient is φ = 125010670020.

The previous prime is 250021340039. The next prime is 250021340111. The reversal of 250021340042 is 240043120052.

It is a happy number.

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., 196693137001 + 53328203041 = 443501^2 + 230929^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62505335009 + ... + 62505335012.

Almost surely, 2^250021340042 is an apocalyptic number.

250021340042 is a deficient number, since it is larger than the sum of its proper divisors (125010670024).

250021340042 is a wasteful number, since it uses less digits than its factorization.

250021340042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125010670023.

The product of its (nonzero) digits is 1920, while the sum is 23.

Adding to 250021340042 its reverse (240043120052), we get a palindrome (490064460094).

The spelling of 250021340042 in words is "two hundred fifty billion, twenty-one million, three hundred forty thousand, forty-two".