143401406 has 4 divisors (see below), whose sum is σ = 215102112. Its totient is φ = 71700702.

The previous prime is 143401387. The next prime is 143401429. The reversal of 143401406 is 604104341.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 604104341 = 151 ⋅4000691.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35850350 + ... + 35850353.

It is an arithmetic number, because the mean of its divisors is an integer number (53775528).

Almost surely, 2^143401406 is an apocalyptic number.

143401406 is a deficient number, since it is larger than the sum of its proper divisors (71700706).

143401406 is an equidigital number, since it uses as much as digits as its factorization.

143401406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71700705.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 143401406 is about 11975.0326095589. The cubic root of 143401406 is about 523.4209923437.

Adding to 143401406 its reverse (604104341), we get a palindrome (747505747).

The spelling of 143401406 in words is "one hundred forty-three million, four hundred one thousand, four hundred six".