122780258 has 8 divisors (see below), whose sum is σ = 190521180. Its totient is φ = 59273200.

The previous prime is 122780257. The next prime is 122780293. The reversal of 122780258 is 852087221.

It can be written as a sum of positive squares in 2 ways, for example, as 115068529 + 7711729 = 10727^2 + 2777^2 .

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 (122780257) 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, 1058393 + ... + 1058508.

Almost surely, 2^122780258 is an apocalyptic number.

122780258 is a deficient number, since it is larger than the sum of its proper divisors (67740922).

122780258 is a wasteful number, since it uses less digits than its factorization.

122780258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2116932.

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 122780258 is about 11080.6253433640. The cubic root of 122780258 is about 497.0226499643.

The spelling of 122780258 in words is "one hundred twenty-two million, seven hundred eighty thousand, two hundred fifty-eight".