1421401402 has 8 divisors (see below), whose sum is σ = 2145182976. Its totient is φ = 706340412.

The previous prime is 1421401379. The next prime is 1421401409. The reversal of 1421401402 is 2041041241.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1421401402.

It is not an unprimeable number, because it can be changed into a prime (1421401409) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2179738 + ... + 2180389.

It is an arithmetic number, because the mean of its divisors is an integer number (268147872).

Almost surely, 2^1421401402 is an apocalyptic number.

1421401402 is a deficient number, since it is larger than the sum of its proper divisors (723781574).

1421401402 is a wasteful number, since it uses less digits than its factorization.

1421401402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4360292.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 1421401402 is about 37701.4774511557. The cubic root of 1421401402 is about 1124.3604996264.

Adding to 1421401402 its reverse (2041041241), we get a palindrome (3462442643).

The spelling of 1421401402 in words is "one billion, four hundred twenty-one million, four hundred one thousand, four hundred two".