1421057512 has 32 divisors (see below), whose sum is σ = 3047760000. Its totient is φ = 608497344.

The previous prime is 1421057501. The next prime is 1421057543. The reversal of 1421057512 is 2157501241.

It is a Harshad number since it is a multiple of its sum of digits (28).

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 7 ways as a sum of consecutive naturals, for example, 58114 + ... + 78862.

It is an arithmetic number, because the mean of its divisors is an integer number (95242500).

Almost surely, 2^1421057512 is an apocalyptic number.

It is an amenable number.

1421057512 is an abundant number, since it is smaller than the sum of its proper divisors (1626702488).

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

1421057512 is a wasteful number, since it uses less digits than its factorization.

1421057512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21985 (or 21981 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 28.

The square root of 1421057512 is about 37696.9164786724. The cubic root of 1421057512 is about 1124.2698174030.

Adding to 1421057512 its reverse (2157501241), we get a palindrome (3578558753).

The spelling of 1421057512 in words is "one billion, four hundred twenty-one million, fifty-seven thousand, five hundred twelve".