70042451 has 2 divisors, whose sum is σ = 70042452. Its totient is φ = 70042450.

The previous prime is 70042447. The next prime is 70042463. The reversal of 70042451 is 15424007.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70042451 - 2² = 70042447 is a prime.

It is not a weakly prime, because it can be changed into another prime (70042481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35021225 + 35021226.

It is an arithmetic number, because the mean of its divisors is an integer number (35021226).

Almost surely, 2^70042451 is an apocalyptic number.

70042451 is a deficient number, since it is larger than the sum of its proper divisors (1).

70042451 is an equidigital number, since it uses as much as digits as its factorization.

70042451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 70042451 is about 8369.1368133159. The cubic root of 70042451 is about 412.2118239465.

Adding to 70042451 its reverse (15424007), we get a palindrome (85466458).

The spelling of 70042451 in words is "seventy million, forty-two thousand, four hundred fifty-one".