101240642254 has 16 divisors (see below), whose sum is σ = 154902096000. Its totient is φ = 49614204024.

The previous prime is 101240642221. The next prime is 101240642257. The reversal of 101240642254 is 452246042101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101240642257) 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, 1871644 + ... + 1924975.

It is an arithmetic number, because the mean of its divisors is an integer number (9681381000).

Almost surely, 2^101240642254 is an apocalyptic number.

101240642254 is a deficient number, since it is larger than the sum of its proper divisors (53661453746).

101240642254 is a wasteful number, since it uses less digits than its factorization.

101240642254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3796887.

The product of its (nonzero) digits is 15360, while the sum is 31.

Adding to 101240642254 its reverse (452246042101), we get a palindrome (553486684355).

The spelling of 101240642254 in words is "one hundred one billion, two hundred forty million, six hundred forty-two thousand, two hundred fifty-four".