1200151242 has 80 divisors (see below), whose sum is σ = 2766989280. Its totient is φ = 390195792.

The previous prime is 1200151241. The next prime is 1200151243. The reversal of 1200151242 is 2421510021.

It is an interprime number because it is at equal distance from previous prime (1200151241) and next prime (1200151243).

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

It is not an unprimeable number, because it can be changed into a prime (1200151241) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1692384 + ... + 1693092.

It is an arithmetic number, because the mean of its divisors is an integer number (34587366).

Almost surely, 2^1200151242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1200151242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1383494640).

1200151242 is an abundant number, since it is smaller than the sum of its proper divisors (1566838038).

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

1200151242 is an frugal number, since it uses more digits than its factorization.

1200151242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781 (or 757 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 1200151242 is about 34643.1990728339. The cubic root of 1200151242 is about 1062.7032113648.

Adding to 1200151242 its reverse (2421510021), we get a palindrome (3621661263).

The spelling of 1200151242 in words is "one billion, two hundred million, one hundred fifty-one thousand, two hundred forty-two".