254157808542 has 64 divisors (see below), whose sum is σ = 587700417024. Its totient is φ = 72418544640.

The previous prime is 254157808529. The next prime is 254157808561. The reversal of 254157808542 is 245808751452.

It is a happy number.

254157808542 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1086138 + ... + 1299234.

It is an arithmetic number, because the mean of its divisors is an integer number (9182819016).

Almost surely, 2^254157808542 is an apocalyptic number.

254157808542 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 254157808542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293850208512).

254157808542 is an abundant number, since it is smaller than the sum of its proper divisors (333542608482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

254157808542 is a wasteful number, since it uses less digits than its factorization.

254157808542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214193.

The product of its (nonzero) digits is 3584000, while the sum is 51.

The spelling of 254157808542 in words is "two hundred fifty-four billion, one hundred fifty-seven million, eight hundred eight thousand, five hundred forty-two".