122742770 has 8 divisors (see below), whose sum is σ = 220937004. Its totient is φ = 49097104.

The previous prime is 122742713. The next prime is 122742779. The reversal of 122742770 is 77247221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 119006281 + 3736489 = 10909^2 + 1933^2 .

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 (122742779) 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, 6137129 + ... + 6137148.

Almost surely, 2^122742770 is an apocalyptic number.

122742770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122742770 is a deficient number, since it is larger than the sum of its proper divisors (98194234).

122742770 is a wasteful number, since it uses less digits than its factorization.

122742770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12274284.

The product of its (nonzero) digits is 10976, while the sum is 32.

The square root of 122742770 is about 11078.9336129431. The cubic root of 122742770 is about 496.9720601761.

Adding to 122742770 its reverse (77247221), we get a palindrome (199989991).

The spelling of 122742770 in words is "one hundred twenty-two million, seven hundred forty-two thousand, seven hundred seventy".