70542191 has 2 divisors, whose sum is σ = 70542192. Its totient is φ = 70542190.

The previous prime is 70542167. The next prime is 70542203. The reversal of 70542191 is 19124507.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 70542191 - 2²⁶ = 3433327 is a prime.

It is a super-2 number, since 2×70542191² = 9952401422160962, which contains 22 as substring.

It is a Chen prime.

It is equal to p_4148147 and since 70542191 and 4148147 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70542151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35271095 + 35271096.

It is an arithmetic number, because the mean of its divisors is an integer number (35271096).

Almost surely, 2^70542191 is an apocalyptic number.

70542191 is a deficient number, since it is larger than the sum of its proper divisors (1).

70542191 is an equidigital number, since it uses as much as digits as its factorization.

70542191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 70542191 is about 8398.9398735793. The cubic root of 70542191 is about 413.1898534400.

Adding to 70542191 its reverse (19124507), we get a palindrome (89666698).

The spelling of 70542191 in words is "seventy million, five hundred forty-two thousand, one hundred ninety-one".