1420251105 has 128 divisors (see below), whose sum is σ = 2925812736. Its totient is φ = 572313600.

The previous prime is 1420251101. The next prime is 1420251139. The reversal of 1420251105 is 5011520241.

It is not a de Polignac number, because 1420251105 - 2² = 1420251101 is a prime.

It is a super-2 number, since 2×1420251105² = 4034226402507442050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1420251101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3080575 + ... + 3081035.

It is an arithmetic number, because the mean of its divisors is an integer number (22857912).

Almost surely, 2^1420251105 is an apocalyptic number.

1420251105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1420251105 is an abundant number, since it is smaller than the sum of its proper divisors (1505561631).

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

1420251105 is a wasteful number, since it uses less digits than its factorization.

1420251105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 1420251105 is about 37686.2190329569. The cubic root of 1420251105 is about 1124.0571141661.

Adding to 1420251105 its reverse (5011520241), we get a palindrome (6431771346).

The spelling of 1420251105 in words is "one billion, four hundred twenty million, two hundred fifty-one thousand, one hundred five".