70400143 has 4 divisors (see below), whose sum is σ = 76800168. Its totient is φ = 64000120.

The previous prime is 70400107. The next prime is 70400147. The reversal of 70400143 is 34100407.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 70400143 - 2⁹ = 70399631 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70400143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70400147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3199996 + ... + 3200017.

It is an arithmetic number, because the mean of its divisors is an integer number (19200042).

Almost surely, 2^70400143 is an apocalyptic number.

70400143 is a deficient number, since it is larger than the sum of its proper divisors (6400025).

70400143 is a wasteful number, since it uses less digits than its factorization.

70400143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6400024.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 70400143 is about 8390.4793069288. The cubic root of 70400143 is about 412.9123257582.

The spelling of 70400143 in words is "seventy million, four hundred thousand, one hundred forty-three".