1420207400 has 24 divisors (see below), whose sum is σ = 3301982670. Its totient is φ = 568082880.

The previous prime is 1420207367. The next prime is 1420207409. The reversal of 1420207400 is 47020241.

It can be written as a sum of positive squares in 3 ways, for example, as 620109604 + 800097796 = 24902^2 + 28286^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (1420207409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3550319 + ... + 3550718.

Almost surely, 2^1420207400 is an apocalyptic number.

1420207400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1420207400 is an abundant number, since it is smaller than the sum of its proper divisors (1881775270).

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

1420207400 is a wasteful number, since it uses less digits than its factorization.

1420207400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7101053 (or 7101044 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 1420207400 is about 37685.6391746246. The cubic root of 1420207400 is about 1124.0455839468.

Adding to 1420207400 its reverse (47020241), we get a palindrome (1467227641).

The spelling of 1420207400 in words is "one billion, four hundred twenty million, two hundred seven thousand, four hundred".