126452778 has 8 divisors (see below), whose sum is σ = 252905568. Its totient is φ = 42150924.

The previous prime is 126452773. The next prime is 126452779. The reversal of 126452778 is 877254621.

It is a sphenic number, since it is the product of 3 distinct primes.

126452778 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (126452773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10537726 + ... + 10537737.

It is an arithmetic number, because the mean of its divisors is an integer number (31613196).

Almost surely, 2^126452778 is an apocalyptic number.

126452778 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

126452778 is a wasteful number, since it uses less digits than its factorization.

126452778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21075468.

The product of its digits is 188160, while the sum is 42.

The square root of 126452778 is about 11245.1224092937. The cubic root of 126452778 is about 501.9295811870.

The spelling of 126452778 in words is "one hundred twenty-six million, four hundred fifty-two thousand, seven hundred seventy-eight".