122709870 has 64 divisors (see below), whose sum is σ = 329184000. Its totient is φ = 32527008.

The previous prime is 122709869. The next prime is 122709901. The reversal of 122709870 is 78907221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47061 + ... + 49599.

It is an arithmetic number, because the mean of its divisors is an integer number (5143500).

Almost surely, 2^122709870 is an apocalyptic number.

122709870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 122709870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164592000).

122709870 is an abundant number, since it is smaller than the sum of its proper divisors (206474130).

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

122709870 is a wasteful number, since it uses less digits than its factorization.

122709870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2734 (or 2728 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 122709870 is about 11077.4487134899. The cubic root of 122709870 is about 496.9276533735.

The spelling of 122709870 in words is "one hundred twenty-two million, seven hundred nine thousand, eight hundred seventy".