42121231043 has 8 divisors (see below), whose sum is σ = 44411923920. Its totient is φ = 39837916800.

The previous prime is 42121231039. The next prime is 42121231093. The reversal of 42121231043 is 34013212124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42121231043 - 2² = 42121231039 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42121231093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1832930 + ... + 1855767.

It is an arithmetic number, because the mean of its divisors is an integer number (5551490490).

Almost surely, 2^42121231043 is an apocalyptic number.

42121231043 is a deficient number, since it is larger than the sum of its proper divisors (2290692877).

42121231043 is a wasteful number, since it uses less digits than its factorization.

42121231043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3689317.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 42121231043 its reverse (34013212124), we get a palindrome (76134443167).

The spelling of 42121231043 in words is "forty-two billion, one hundred twenty-one million, two hundred thirty-one thousand, forty-three".