1202145042 has 32 divisors (see below), whose sum is σ = 2749622400. Its totient is φ = 343237248.

The previous prime is 1202145041. The next prime is 1202145053. The reversal of 1202145042 is 2405412021.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1202145041) 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, 58684 + ... + 76472.

It is an arithmetic number, because the mean of its divisors is an integer number (85925700).

Almost surely, 2^1202145042 is an apocalyptic number.

1202145042 is an abundant number, since it is smaller than the sum of its proper divisors (1547477358).

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

1202145042 is a wasteful number, since it uses less digits than its factorization.

1202145042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19410.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 1202145042 is about 34671.9633421587. The cubic root of 1202145042 is about 1063.2913720750.

Adding to 1202145042 its reverse (2405412021), we get a palindrome (3607557063).

It can be divided in two parts, 12021450 and 42, that multiplied together give a square (504900900 = 22470²).

The spelling of 1202145042 in words is "one billion, two hundred two million, one hundred forty-five thousand, forty-two".