1010042121 has 8 divisors (see below), whose sum is σ = 1469152224. Its totient is φ = 612146720.

The previous prime is 1010042119. The next prime is 1010042123. The reversal of 1010042121 is 1212400101.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1010042119) and next prime (1010042123).

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 1010042121 - 2¹ = 1010042119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1010042097 and 1010042106.

It is not an unprimeable number, because it can be changed into a prime (1010042123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15303636 + ... + 15303701.

It is an arithmetic number, because the mean of its divisors is an integer number (183644028).

Almost surely, 2^1010042121 is an apocalyptic number.

1010042121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1010042121 is a deficient number, since it is larger than the sum of its proper divisors (459110103).

1010042121 is a wasteful number, since it uses less digits than its factorization.

1010042121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30607351.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1010042121 is about 31781.1598435299. The cubic root of 1010042121 is about 1003.3362308525.

Adding to 1010042121 its reverse (1212400101), we get a palindrome (2222442222).

The spelling of 1010042121 in words is "one billion, ten million, forty-two thousand, one hundred twenty-one".