1200015142 has 16 divisors (see below), whose sum is σ = 1952394192. Its totient is φ = 550938880.

The previous prime is 1200015121. The next prime is 1200015149. The reversal of 1200015142 is 2415100021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200015149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 429028 + ... + 431815.

It is an arithmetic number, because the mean of its divisors is an integer number (122024637).

Almost surely, 2^1200015142 is an apocalyptic number.

1200015142 is a deficient number, since it is larger than the sum of its proper divisors (752379050).

1200015142 is a wasteful number, since it uses less digits than its factorization.

1200015142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860903.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 1200015142 is about 34641.2347066325. The cubic root of 1200015142 is about 1062.6630388238.

Adding to 1200015142 its reverse (2415100021), we get a palindrome (3615115163).

The spelling of 1200015142 in words is "one billion, two hundred million, fifteen thousand, one hundred forty-two".