1402003221 has 8 divisors (see below), whose sum is σ = 1879125504. Its totient is φ = 929774880.

The previous prime is 1402003201. The next prime is 1402003247. The reversal of 1402003221 is 1223002041.

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

It is not a de Polignac number, because 1402003221 - 2⁵ = 1402003189 is a prime.

It is a super-2 number, since 2×1402003221² = 3931226063388749682, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1402003221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1402003201) 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, 1222816 + ... + 1223961.

It is an arithmetic number, because the mean of its divisors is an integer number (234890688).

Almost surely, 2^1402003221 is an apocalyptic number.

It is an amenable number.

1402003221 is a deficient number, since it is larger than the sum of its proper divisors (477122283).

1402003221 is a wasteful number, since it uses less digits than its factorization.

1402003221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2446971.

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

The square root of 1402003221 is about 37443.3334653847. Note that the first 3 decimals coincide. The cubic root of 1402003221 is about 1119.2222547427. Note that the first 4 decimals are identical.

Adding to 1402003221 its reverse (1223002041), we get a palindrome (2625005262).

The spelling of 1402003221 in words is "one billion, four hundred two million, three thousand, two hundred twenty-one".