1244377142 has 64 divisors (see below), whose sum is σ = 2077125120. Its totient is φ = 557356800.

The previous prime is 1244377139. The next prime is 1244377163. The reversal of 1244377142 is 2417734421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5897417 + ... + 5897627.

It is an arithmetic number, because the mean of its divisors is an integer number (32455080).

Almost surely, 2^1244377142 is an apocalyptic number.

1244377142 is a deficient number, since it is larger than the sum of its proper divisors (832747978).

1244377142 is a wasteful number, since it uses less digits than its factorization.

1244377142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389.

The product of its digits is 37632, while the sum is 35.

The square root of 1244377142 is about 35275.7302121444. The cubic root of 1244377142 is about 1075.5997063409.

The spelling of 1244377142 in words is "one billion, two hundred forty-four million, three hundred seventy-seven thousand, one hundred forty-two".