1238122340 has 96 divisors (see below), whose sum is σ = 3244254720. Its totient is φ = 386436096.

The previous prime is 1238122309. The next prime is 1238122351. The reversal of 1238122340 is 432218321.

It is a Harshad number since it is a multiple of its sum of digits (26).

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, 128201 + ... + 137519.

It is an arithmetic number, because the mean of its divisors is an integer number (33794320).

Almost surely, 2^1238122340 is an apocalyptic number.

1238122340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1238122340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1622127360).

1238122340 is an abundant number, since it is smaller than the sum of its proper divisors (2006132380).

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

1238122340 is a wasteful number, since it uses less digits than its factorization.

1238122340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9421 (or 9419 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 1238122340 is about 35186.9626424333. The cubic root of 1238122340 is about 1073.7945283012.

The spelling of 1238122340 in words is "one billion, two hundred thirty-eight million, one hundred twenty-two thousand, three hundred forty".