8742520154 has 4 divisors (see below), whose sum is σ = 13113780234. Its totient is φ = 4371260076.

The previous prime is 8742520153. The next prime is 8742520169. The reversal of 8742520154 is 4510252478.

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., 6087900625 + 2654619529 = 78025^2 + 51523^2 .

It is not an unprimeable number, because it can be changed into a prime (8742520151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2185630037 + ... + 2185630040.

Almost surely, 2^8742520154 is an apocalyptic number.

8742520154 is a deficient number, since it is larger than the sum of its proper divisors (4371260080).

8742520154 is a wasteful number, since it uses less digits than its factorization.

8742520154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4371260079.

The product of its (nonzero) digits is 89600, while the sum is 38.

The square root of 8742520154 is about 93501.4446626361. Note that the first 3 decimals coincide. The cubic root of 8742520154 is about 2060.0553095716.

The spelling of 8742520154 in words is "eight billion, seven hundred forty-two million, five hundred twenty thousand, one hundred fifty-four".