1202021142 has 32 divisors (see below), whose sum is σ = 2909094912. Its totient is φ = 323232384.

The previous prime is 1202021141. The next prime is 1202021173. The reversal of 1202021142 is 2411202021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202021141) 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, 841038 + ... + 842465.

It is an arithmetic number, because the mean of its divisors is an integer number (90909216).

Almost surely, 2^1202021142 is an apocalyptic number.

1202021142 is an abundant number, since it is smaller than the sum of its proper divisors (1707073770).

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

1202021142 is a wasteful number, since it uses less digits than its factorization.

1202021142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1683532.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 1202021142 is about 34670.1765498822. The cubic root of 1202021142 is about 1063.2548411732.

Adding to 1202021142 its reverse (2411202021), we get a palindrome (3613223163).

The spelling of 1202021142 in words is "one billion, two hundred two million, twenty-one thousand, one hundred forty-two".