122487290 has 8 divisors (see below), whose sum is σ = 220477140. Its totient is φ = 48994912.

The previous prime is 122487289. The next prime is 122487307. The reversal of 122487290 is 92784221.

It can be written as a sum of positive squares in 2 ways, for example, as 101022601 + 21464689 = 10051^2 + 4633^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 122487290.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6124355 + ... + 6124374.

Almost surely, 2^122487290 is an apocalyptic number.

122487290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122487290 is a deficient number, since it is larger than the sum of its proper divisors (97989850).

122487290 is a wasteful number, since it uses less digits than its factorization.

122487290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12248736.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 122487290 is about 11067.3976164228. The cubic root of 122487290 is about 496.6270171392.

The spelling of 122487290 in words is "one hundred twenty-two million, four hundred eighty-seven thousand, two hundred ninety".