121142057 has 2 divisors, whose sum is σ = 121142058. Its totient is φ = 121142056.

The previous prime is 121142011. The next prime is 121142101. The reversal of 121142057 is 750241121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68376361 + 52765696 = 8269^2 + 7264^2 .

It is a cyclic number.

It is not a de Polignac number, because 121142057 - 2²⁶ = 54033193 is a prime.

It is a super-3 number, since 3×121142057³ (a number of 25 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (621142057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60571028 + 60571029.

It is an arithmetic number, because the mean of its divisors is an integer number (60571029).

Almost surely, 2^121142057 is an apocalyptic number.

It is an amenable number.

121142057 is a deficient number, since it is larger than the sum of its proper divisors (1).

121142057 is an equidigital number, since it uses as much as digits as its factorization.

121142057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 121142057 is about 11006.4552422658. The cubic root of 121142057 is about 494.8022296021.

Adding to 121142057 its reverse (750241121), we get a palindrome (871383178).

The spelling of 121142057 in words is "one hundred twenty-one million, one hundred forty-two thousand, fifty-seven".