136451128242 has 64 divisors (see below), whose sum is σ = 321045451776. Its totient is φ = 38116599360.

The previous prime is 136451128153. The next prime is 136451128249. The reversal of 136451128242 is 242821154631.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 136451128242.

It is not an unprimeable number, because it can be changed into a prime (136451128249) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 530473 + ... + 744515.

It is an arithmetic number, because the mean of its divisors is an integer number (5016335184).

Almost surely, 2^136451128242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 136451128242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160522725888).

136451128242 is an abundant number, since it is smaller than the sum of its proper divisors (184594323534).

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

136451128242 is a wasteful number, since it uses less digits than its factorization.

136451128242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214815.

The product of its digits is 92160, while the sum is 39.

The spelling of 136451128242 in words is "one hundred thirty-six billion, four hundred fifty-one million, one hundred twenty-eight thousand, two hundred forty-two".