70140142 has 4 divisors (see below), whose sum is σ = 105210216. Its totient is φ = 35070070.

The previous prime is 70140139. The next prime is 70140163. The reversal of 70140142 is 24104107.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24104107 = 1223 ⋅19709.

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, 17535034 + ... + 17535037.

It is an arithmetic number, because the mean of its divisors is an integer number (26302554).

Almost surely, 2^70140142 is an apocalyptic number.

70140142 is a deficient number, since it is larger than the sum of its proper divisors (35070074).

70140142 is a wasteful number, since it uses less digits than its factorization.

70140142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35070073.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 70140142 is about 8374.9711641295. The cubic root of 70140142 is about 412.4033776754.

Adding to 70140142 its reverse (24104107), we get a palindrome (94244249).

The spelling of 70140142 in words is "seventy million, one hundred forty thousand, one hundred forty-two".