70040143 has 4 divisors (see below), whose sum is σ = 70331008. Its totient is φ = 69749280.

The previous prime is 70040123. The next prime is 70040197. The reversal of 70040143 is 34104007.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34104007 = 7 ⋅4872001.

It is a cyclic number.

It is not a de Polignac number, because 70040143 - 2²¹ = 67942991 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 70040143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70040123) 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, 145071 + ... + 145552.

It is an arithmetic number, because the mean of its divisors is an integer number (17582752).

Almost surely, 2^70040143 is an apocalyptic number.

70040143 is a deficient number, since it is larger than the sum of its proper divisors (290865).

70040143 is a wasteful number, since it uses less digits than its factorization.

70040143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290864.

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

The square root of 70040143 is about 8368.9989246026. The cubic root of 70040143 is about 412.2072962383.

The spelling of 70040143 in words is "seventy million, forty thousand, one hundred forty-three".