1406021420 has 12 divisors (see below), whose sum is σ = 2952645024. Its totient is φ = 562408560.

The previous prime is 1406021369. The next prime is 1406021437. The reversal of 1406021420 is 241206041.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 70301071 = 1406021420 / (1 + 4 + 0 + 6 + 0 + 2 + 1 + 4 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 1406021392 and 1406021401.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 35150516 + ... + 35150555.

It is an arithmetic number, because the mean of its divisors is an integer number (246053752).

Almost surely, 2^1406021420 is an apocalyptic number.

1406021420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1406021420 is an abundant number, since it is smaller than the sum of its proper divisors (1546623604).

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

1406021420 is a wasteful number, since it uses less digits than its factorization.

1406021420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70301080 (or 70301078 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1406021420 is about 37496.9521428076. The cubic root of 1406021420 is about 1120.2904805650.

Adding to 1406021420 its reverse (241206041), we get a palindrome (1647227461).

The spelling of 1406021420 in words is "one billion, four hundred six million, twenty-one thousand, four hundred twenty".