70740121 has 2 divisors, whose sum is σ = 70740122. Its totient is φ = 70740120.

The previous prime is 70740113. The next prime is 70740133. The reversal of 70740121 is 12104707.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56025225 + 14714896 = 7485^2 + 3836^2 .

It is a cyclic number.

It is not a de Polignac number, because 70740121 - 2³ = 70740113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 70740092 and 70740101.

It is not a weakly prime, because it can be changed into another prime (70740151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35370060 + 35370061.

It is an arithmetic number, because the mean of its divisors is an integer number (35370061).

Almost surely, 2^70740121 is an apocalyptic number.

It is an amenable number.

70740121 is a deficient number, since it is larger than the sum of its proper divisors (1).

70740121 is an equidigital number, since it uses as much as digits as its factorization.

70740121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 392, while the sum is 22.

The square root of 70740121 is about 8410.7146545344. The cubic root of 70740121 is about 413.5759405740.

Adding to 70740121 its reverse (12104707), we get a palindrome (82844828).

The spelling of 70740121 in words is "seventy million, seven hundred forty thousand, one hundred twenty-one".