1298122390 has 32 divisors (see below), whose sum is σ = 2376541440. Its totient is φ = 510452064.

The previous prime is 1298122381. The next prime is 1298122403. The reversal of 1298122390 is 932218921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138637 + ... + 147703.

It is an arithmetic number, because the mean of its divisors is an integer number (74266920).

Almost surely, 2^1298122390 is an apocalyptic number.

1298122390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1298122390 is a deficient number, since it is larger than the sum of its proper divisors (1078419050).

1298122390 is a wasteful number, since it uses less digits than its factorization.

1298122390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9316.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 1298122390 is about 36029.4655802719. The cubic root of 1298122390 is about 1090.8671913811.

The spelling of 1298122390 in words is "one billion, two hundred ninety-eight million, one hundred twenty-two thousand, three hundred ninety".