1244291421 has 16 divisors (see below), whose sum is σ = 1833024384. Its totient is φ = 746786304.

The previous prime is 1244291383. The next prime is 1244291483. The reversal of 1244291421 is 1241924421.

It is not a de Polignac number, because 1244291421 - 2⁶ = 1244291357 is a prime.

It is a super-2 number, since 2×1244291421² = 3096522280748398482, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244291621) 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, 529216 + ... + 531561.

It is an arithmetic number, because the mean of its divisors is an integer number (114564024).

Almost surely, 2^1244291421 is an apocalyptic number.

It is an amenable number.

1244291421 is a deficient number, since it is larger than the sum of its proper divisors (588732963).

1244291421 is a wasteful number, since it uses less digits than its factorization.

1244291421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060820.

The product of its digits is 4608, while the sum is 30.

The square root of 1244291421 is about 35274.5151773912. The cubic root of 1244291421 is about 1075.5750076123.

The spelling of 1244291421 in words is "one billion, two hundred forty-four million, two hundred ninety-one thousand, four hundred twenty-one".