1210021042 has 8 divisors (see below), whose sum is σ = 1910559600. Its totient is φ = 573167844.

The previous prime is 1210021037. The next prime is 1210021049. The reversal of 1210021042 is 2401200121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1210021049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15921292 + ... + 15921367.

It is an arithmetic number, because the mean of its divisors is an integer number (238819950).

Almost surely, 2^1210021042 is an apocalyptic number.

1210021042 is a deficient number, since it is larger than the sum of its proper divisors (700538558).

1210021042 is a wasteful number, since it uses less digits than its factorization.

1210021042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31842680.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1210021042 is about 34785.3567180214. The cubic root of 1210021042 is about 1065.6084137011.

Adding to 1210021042 its reverse (2401200121), we get a palindrome (3611221163).

The spelling of 1210021042 in words is "one billion, two hundred ten million, twenty-one thousand, forty-two".