143402401 has 8 divisors (see below), whose sum is σ = 149779584. Its totient is φ = 137037120.

The previous prime is 143402383. The next prime is 143402437. The reversal of 143402401 is 104204341.

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

It is a cyclic number.

It is not a de Polignac number, because 143402401 - 2¹⁷ = 143271329 is a prime.

It is a super-2 number, since 2×143402401² = 41128497225129602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143400401) 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, 29161 + ... + 33721.

It is an arithmetic number, because the mean of its divisors is an integer number (18722448).

Almost surely, 2^143402401 is an apocalyptic number.

It is an amenable number.

143402401 is a deficient number, since it is larger than the sum of its proper divisors (6377183).

143402401 is a wasteful number, since it uses less digits than its factorization.

143402401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5951.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 143402401 is about 11975.0741542589. The cubic root of 143402401 is about 523.4222029378.

Adding to 143402401 its reverse (104204341), we get a palindrome (247606742).

The spelling of 143402401 in words is "one hundred forty-three million, four hundred two thousand, four hundred one".