1121642 has 16 divisors (see below), whose sum is σ = 1766400. Its totient is φ = 533520.

The previous prime is 1121629. The next prime is 1121651. The reversal of 1121642 is 2461211.

It is a super-3 number, since 3×1121642³ = 4233348713814423864, which contains 333 as substring.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1121642.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4784 + ... + 5012.

It is an arithmetic number, because the mean of its divisors is an integer number (110400).

2^1121642 is an apocalyptic number.

1121642 is a deficient number, since it is larger than the sum of its proper divisors (644758).

1121642 is a wasteful number, since it uses less digits than its factorization.

1121642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341.

The product of its digits is 96, while the sum is 17.

The square root of 1121642 is about 1059.0760123806. The cubic root of 1121642 is about 103.9006077042.

Adding to 1121642 its reverse (2461211), we get a palindrome (3582853).

The spelling of 1121642 in words is "one million, one hundred twenty-one thousand, six hundred forty-two".