126278245 has 8 divisors (see below), whose sum is σ = 152551800. Its totient is φ = 100344000.

The previous prime is 126278233. The next prime is 126278263. The reversal of 126278245 is 542872621.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 12173121 + 114105124 = 3489^2 + 10682^2 .

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

It is not a de Polignac number, because 126278245 - 2⁵ = 126278213 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84006 + ... + 85495.

It is an arithmetic number, because the mean of its divisors is an integer number (19068975).

Almost surely, 2^126278245 is an apocalyptic number.

It is an amenable number.

126278245 is a deficient number, since it is larger than the sum of its proper divisors (26273555).

126278245 is a wasteful number, since it uses less digits than its factorization.

126278245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169655.

The product of its digits is 53760, while the sum is 37.

The square root of 126278245 is about 11237.3593428350. The cubic root of 126278245 is about 501.6985499886.

It can be divided in two parts, 1262 and 78245, that added together give a cube (79507 = 43³).

The spelling of 126278245 in words is "one hundred twenty-six million, two hundred seventy-eight thousand, two hundred forty-five".