1121210142 has 32 divisors (see below), whose sum is σ = 2418722208. Its totient is φ = 344443776.

The previous prime is 1121210137. The next prime is 1121210143. The reversal of 1121210142 is 2410121211.

It is a super-2 number, since 2×1121210142² = 2514224365047320328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121210143) 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, 39928 + ... + 61940.

It is an arithmetic number, because the mean of its divisors is an integer number (75585069).

Almost surely, 2^1121210142 is an apocalyptic number.

1121210142 is an abundant number, since it is smaller than the sum of its proper divisors (1297512066).

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

1121210142 is a wasteful number, since it uses less digits than its factorization.

1121210142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22684.

The product of its (nonzero) digits is 32, while the sum is 15.

The square root of 1121210142 is about 33484.4761344716. The cubic root of 1121210142 is about 1038.8727128360.

Adding to 1121210142 its reverse (2410121211), we get a palindrome (3531331353).

The spelling of 1121210142 in words is "one billion, one hundred twenty-one million, two hundred ten thousand, one hundred forty-two".