121949039 has 2 divisors, whose sum is σ = 121949040. Its totient is φ = 121949038.

The previous prime is 121949027. The next prime is 121949053. The reversal of 121949039 is 930949121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121949039 - 2¹² = 121944943 is a prime.

It is a super-2 number, since 2×121949039² = 29743136226047042, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121948993 and 121949011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121949099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60974519 + 60974520.

It is an arithmetic number, because the mean of its divisors is an integer number (60974520).

Almost surely, 2^121949039 is an apocalyptic number.

121949039 is a deficient number, since it is larger than the sum of its proper divisors (1).

121949039 is an equidigital number, since it uses as much as digits as its factorization.

121949039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 121949039 is about 11043.0538801547. The cubic root of 121949039 is about 495.8984993809.

The spelling of 121949039 in words is "one hundred twenty-one million, nine hundred forty-nine thousand, thirty-nine".