1421001043 has 16 divisors (see below), whose sum is σ = 1772918784. Its totient is φ = 1106472960.

The previous prime is 1421001011. The next prime is 1421001047. The reversal of 1421001043 is 3401001241.

It is a cyclic number.

It is not a de Polignac number, because 1421001043 - 2⁵ = 1421001011 is a prime.

It is a super-3 number, since 3×1421001043³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1421001047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114771 + ... + 126547.

It is an arithmetic number, because the mean of its divisors is an integer number (110807424).

Almost surely, 2^1421001043 is an apocalyptic number.

1421001043 is a deficient number, since it is larger than the sum of its proper divisors (351917741).

1421001043 is a wasteful number, since it uses less digits than its factorization.

1421001043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13362.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1421001043 is about 37696.1674842417. The cubic root of 1421001043 is about 1124.2549253871.

Adding to 1421001043 its reverse (3401001241), we get a palindrome (4822002284).

The spelling of 1421001043 in words is "one billion, four hundred twenty-one million, one thousand, forty-three".