1213250142 has 32 divisors (see below), whose sum is σ = 2616999840. Its totient is φ = 372758400.

The previous prime is 1213250141. The next prime is 1213250219. The reversal of 1213250142 is 2410523121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213250141) 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, 43584 + ... + 65772.

It is an arithmetic number, because the mean of its divisors is an integer number (81781245).

Almost surely, 2^1213250142 is an apocalyptic number.

1213250142 is an abundant number, since it is smaller than the sum of its proper divisors (1403749698).

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

1213250142 is a wasteful number, since it uses less digits than its factorization.

1213250142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22908.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1213250142 is about 34831.7404388583. The cubic root of 1213250142 is about 1066.5554770601. Note that the first 3 decimals are identical.

Adding to 1213250142 its reverse (2410523121), we get a palindrome (3623773263).

The spelling of 1213250142 in words is "one billion, two hundred thirteen million, two hundred fifty thousand, one hundred forty-two".