1430421620 has 12 divisors (see below), whose sum is σ = 3003885444. Its totient is φ = 572168640.

The previous prime is 1430421613. The next prime is 1430421647. The reversal of 1430421620 is 261240341.

It can be written as a sum of positive squares in 2 ways, for example, as 558755044 + 871666576 = 23638^2 + 29524^2 .

It is a super-2 number, since 2×1430421620² = 4092212021926848800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35760521 + ... + 35760560.

It is an arithmetic number, because the mean of its divisors is an integer number (250323787).

Almost surely, 2^1430421620 is an apocalyptic number.

1430421620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1430421620 is an abundant number, since it is smaller than the sum of its proper divisors (1573463824).

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

1430421620 is a wasteful number, since it uses less digits than its factorization.

1430421620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71521090 (or 71521088 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1430421620 is about 37820.9151132016. The cubic root of 1430421620 is about 1126.7338846646.

Adding to 1430421620 its reverse (261240341), we get a palindrome (1691661961).

The spelling of 1430421620 in words is "one billion, four hundred thirty million, four hundred twenty-one thousand, six hundred twenty".