126778258 has 8 divisors (see below), whose sum is σ = 191665152. Its totient is φ = 62889876.

The previous prime is 126778247. The next prime is 126778259. The reversal of 126778258 is 852877621.

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

It is not an unprimeable number, because it can be changed into a prime (126778259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249310 + ... + 249817.

It is an arithmetic number, because the mean of its divisors is an integer number (23958144).

Almost surely, 2^126778258 is an apocalyptic number.

126778258 is a deficient number, since it is larger than the sum of its proper divisors (64886894).

126778258 is a wasteful number, since it uses less digits than its factorization.

126778258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499256.

The product of its digits is 376320, while the sum is 46.

The square root of 126778258 is about 11259.5851610972. The cubic root of 126778258 is about 502.3598553100.

The spelling of 126778258 in words is "one hundred twenty-six million, seven hundred seventy-eight thousand, two hundred fifty-eight".