101243513254 has 16 divisors (see below), whose sum is σ = 163552501728. Its totient is φ = 46726264512.

The previous prime is 101243513237. The next prime is 101243513279. The reversal of 101243513254 is 452315342101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1385194 + ... + 1456450.

It is an arithmetic number, because the mean of its divisors is an integer number (10222031358).

Almost surely, 2^101243513254 is an apocalyptic number.

101243513254 is a deficient number, since it is larger than the sum of its proper divisors (62308988474).

101243513254 is a wasteful number, since it uses less digits than its factorization.

101243513254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125919.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 101243513254 its reverse (452315342101), we get a palindrome (553558855355).

The spelling of 101243513254 in words is "one hundred one billion, two hundred forty-three million, five hundred thirteen thousand, two hundred fifty-four".