70242142 has 4 divisors (see below), whose sum is σ = 105363216. Its totient is φ = 35121070.

The previous prime is 70242127. The next prime is 70242163. The reversal of 70242142 is 24124207.

It is a happy number.

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

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17560534 + ... + 17560537.

It is an arithmetic number, because the mean of its divisors is an integer number (26340804).

Almost surely, 2^70242142 is an apocalyptic number.

70242142 is a deficient number, since it is larger than the sum of its proper divisors (35121074).

70242142 is a wasteful number, since it uses less digits than its factorization.

70242142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35121073.

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 70242142 is about 8381.0585250313. The cubic root of 70242142 is about 412.6031908350.

Adding to 70242142 its reverse (24124207), we get a palindrome (94366349).

The spelling of 70242142 in words is "seventy million, two hundred forty-two thousand, one hundred forty-two".