122740770 has 32 divisors (see below), whose sum is σ = 297338688. Its totient is φ = 32424128.

The previous prime is 122740763. The next prime is 122740771. The reversal of 122740770 is 77047221.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (122740771) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15909 + ... + 22328.

It is an arithmetic number, because the mean of its divisors is an integer number (9291834).

Almost surely, 2^122740770 is an apocalyptic number.

122740770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122740770 is an abundant number, since it is smaller than the sum of its proper divisors (174597918).

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

122740770 is a wasteful number, since it uses less digits than its factorization.

122740770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38354.

The product of its (nonzero) digits is 5488, while the sum is 30.

The square root of 122740770 is about 11078.8433511807. The cubic root of 122740770 is about 496.9693609009.

Adding to 122740770 its reverse (77047221), we get a palindrome (199787991).

The spelling of 122740770 in words is "one hundred twenty-two million, seven hundred forty thousand, seven hundred seventy".