1210142322 has 64 divisors (see below), whose sum is σ = 2748504960. Its totient is φ = 394535232.

The previous prime is 1210142321. The next prime is 1210142327. The reversal of 1210142322 is 2232410121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1210142295 and 1210142304.

It is not an unprimeable number, because it can be changed into a prime (1210142321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1565128 + ... + 1565900.

It is an arithmetic number, because the mean of its divisors is an integer number (42945390).

Almost surely, 2^1210142322 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1210142322, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1374252480).

1210142322 is an abundant number, since it is smaller than the sum of its proper divisors (1538362638).

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

1210142322 is a wasteful number, since it uses less digits than its factorization.

1210142322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1384 (or 1378 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1210142322 is about 34787.0999366144. The cubic root of 1210142322 is about 1065.6440143688.

Adding to 1210142322 its reverse (2232410121), we get a palindrome (3442552443).

The spelling of 1210142322 in words is "one billion, two hundred ten million, one hundred forty-two thousand, three hundred twenty-two".