1400021043 has 8 divisors (see below), whose sum is σ = 1976500368. Its totient is φ = 878444544.

The previous prime is 1400020981. The next prime is 1400021053. The reversal of 1400021043 is 3401200041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1400021043 - 2¹⁴ = 1400004659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1400021053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13725646 + ... + 13725747.

It is an arithmetic number, because the mean of its divisors is an integer number (247062546).

Almost surely, 2^1400021043 is an apocalyptic number.

1400021043 is a deficient number, since it is larger than the sum of its proper divisors (576479325).

1400021043 is a wasteful number, since it uses less digits than its factorization.

1400021043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27451413.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1400021043 is about 37416.8550655984. The cubic root of 1400021043 is about 1118.6945469513.

Adding to 1400021043 its reverse (3401200041), we get a palindrome (4801221084).

The spelling of 1400021043 in words is "one billion, four hundred million, twenty-one thousand, forty-three".