151978126 has 4 divisors (see below), whose sum is σ = 227967192. Its totient is φ = 75989062.

The previous prime is 151978121. The next prime is 151978139. The reversal of 151978126 is 621879151.

It is a happy number.

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 (151978121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37994530 + ... + 37994533.

It is an arithmetic number, because the mean of its divisors is an integer number (56991798).

Almost surely, 2^151978126 is an apocalyptic number.

151978126 is a deficient number, since it is larger than the sum of its proper divisors (75989066).

151978126 is an equidigital number, since it uses as much as digits as its factorization.

151978126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75989065.

The product of its digits is 30240, while the sum is 40.

The square root of 151978126 is about 12327.9408661787. The cubic root of 151978126 is about 533.6547282454.

The spelling of 151978126 in words is "one hundred fifty-one million, nine hundred seventy-eight thousand, one hundred twenty-six".