42061202349989 has 4 divisors (see below), whose sum is σ = 42061219520460. Its totient is φ = 42061185179520.

The previous prime is 42061202349979. The next prime is 42061202350001. The reversal of 42061202349989 is 98994320216024.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9366250147489 + 32694952202500 = 3060433^2 + 5717950^2 .

It is a cyclic number.

It is not a de Polignac number, because 42061202349989 - 2⁴⁰ = 40961690722213 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42061202349979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4145474 + ... + 10065155.

It is an arithmetic number, because the mean of its divisors is an integer number (10515304880115).

Almost surely, 2^{42061202349989} is an apocalyptic number.

It is an amenable number.

42061202349989 is a deficient number, since it is larger than the sum of its proper divisors (17170471).

42061202349989 is a wasteful number, since it uses less digits than its factorization.

42061202349989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17170470.

The product of its (nonzero) digits is 13436928, while the sum is 59.

The spelling of 42061202349989 in words is "forty-two trillion, sixty-one billion, two hundred two million, three hundred forty-nine thousand, nine hundred eighty-nine".