1900122 has 48 divisors (see below), whose sum is σ = 4629312. Its totient is φ = 517440.

The previous prime is 1900121. The next prime is 1900147. The reversal of 1900122 is 2210091.

It is a happy number.

It is a super-2 number, since 2×1900122² = 7220927229768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1900121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6622 + ... + 6902.

It is an arithmetic number, because the mean of its divisors is an integer number (96444).

2^1900122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1900122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2314656).

1900122 is an abundant number, since it is smaller than the sum of its proper divisors (2729190).

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

1900122 is a wasteful number, since it uses less digits than its factorization.

1900122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323 (or 316 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1900122 is about 1378.4491285499. The cubic root of 1900122 is about 123.8588838642.

The spelling of 1900122 in words is "one million, nine hundred thousand, one hundred twenty-two".