151242478 has 4 divisors (see below), whose sum is σ = 226863720. Its totient is φ = 75621238.

The previous prime is 151242473. The next prime is 151242491. The reversal of 151242478 is 874242151.

151242478 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151242473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37810618 + ... + 37810621.

It is an arithmetic number, because the mean of its divisors is an integer number (56715930).

Almost surely, 2^151242478 is an apocalyptic number.

151242478 is a deficient number, since it is larger than the sum of its proper divisors (75621242).

151242478 is an equidigital number, since it uses as much as digits as its factorization.

151242478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75621241.

The product of its digits is 17920, while the sum is 34.

The square root of 151242478 is about 12298.0680596588. The cubic root of 151242478 is about 532.7922857740.

The spelling of 151242478 in words is "one hundred fifty-one million, two hundred forty-two thousand, four hundred seventy-eight".