1420261238 has 16 divisors (see below), whose sum is σ = 2380749840. Its totient is φ = 629827200.

The previous prime is 1420261237. The next prime is 1420261307. The reversal of 1420261238 is 8321620241.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1420261238.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420261237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 786383 + ... + 788186.

It is an arithmetic number, because the mean of its divisors is an integer number (148796865).

Almost surely, 2^1420261238 is an apocalyptic number.

1420261238 is a deficient number, since it is larger than the sum of its proper divisors (960488602).

1420261238 is a wasteful number, since it uses less digits than its factorization.

1420261238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1574623.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 1420261238 is about 37686.3534717807. The cubic root of 1420261238 is about 1124.0597874126.

Adding to 1420261238 its reverse (8321620241), we get a palindrome (9741881479).

The spelling of 1420261238 in words is "one billion, four hundred twenty million, two hundred sixty-one thousand, two hundred thirty-eight".