1201992 has 64 divisors (see below), whose sum is σ = 3412800. Its totient is φ = 349440.

The previous prime is 1201969. The next prime is 1201999. The reversal of 1201992 is 2991021.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (1201999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7578 + ... + 7734.

It is an arithmetic number, because the mean of its divisors is an integer number (53325).

2^1201992 is an apocalyptic number.

1201992 is a gapful number since it is divisible by the number (12) 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 1201992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1706400).

1201992 is an abundant number, since it is smaller than the sum of its proper divisors (2210808).

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

1201992 is a wasteful number, since it uses less digits than its factorization.

1201992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206 (or 202 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 24.

The square root of 1201992 is about 1096.3539574426. The cubic root of 1201992 is about 106.3246248528.

It can be divided in two parts, 120 and 1992, that added together give a palindrome (2112).

The spelling of 1201992 in words is "one million, two hundred one thousand, nine hundred ninety-two".