1402543623 has 8 divisors (see below), whose sum is σ = 2013908848. Its totient is φ = 863103744.

The previous prime is 1402543619. The next prime is 1402543627. The reversal of 1402543623 is 3263452041.

It is an interprime number because it is at equal distance from previous prime (1402543619) and next prime (1402543627).

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

It is not a de Polignac number, because 1402543623 - 2² = 1402543619 is a prime.

It is a super-2 number, since 2×1402543623² = 3934257228835932258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1402543627) 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, 17981290 + ... + 17981367.

It is an arithmetic number, because the mean of its divisors is an integer number (251738606).

Almost surely, 2^1402543623 is an apocalyptic number.

1402543623 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1402543623 is a deficient number, since it is larger than the sum of its proper divisors (611365225).

1402543623 is a wasteful number, since it uses less digits than its factorization.

1402543623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35962673.

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 1402543623 is about 37450.5490346937. The cubic root of 1402543623 is about 1119.3660376390.

Adding to 1402543623 its reverse (3263452041), we get a palindrome (4665995664).

The spelling of 1402543623 in words is "one billion, four hundred two million, five hundred forty-three thousand, six hundred twenty-three".