1400430021 has 8 divisors (see below), whose sum is σ = 1879606464. Its totient is φ = 927436800.

The previous prime is 1400430013. The next prime is 1400430023. The reversal of 1400430021 is 1200340041.

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

It is not a de Polignac number, because 1400430021 - 2³ = 1400430013 is a prime.

It is a super-2 number, since 2×1400430021² = 3922408487436120882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400430023) 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, 1545276 + ... + 1546181.

It is an arithmetic number, because the mean of its divisors is an integer number (234950808).

Almost surely, 2^1400430021 is an apocalyptic number.

It is an amenable number.

1400430021 is a deficient number, since it is larger than the sum of its proper divisors (479176443).

1400430021 is a wasteful number, since it uses less digits than its factorization.

1400430021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3091611.

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

The square root of 1400430021 is about 37422.3198238698. The cubic root of 1400430021 is about 1118.8034683891.

Adding to 1400430021 its reverse (1200340041), we get a palindrome (2600770062).

The spelling of 1400430021 in words is "one billion, four hundred million, four hundred thirty thousand, twenty-one".