1042220101 has 8 divisors (see below), whose sum is σ = 1122881760. Its totient is φ = 961628592.

The previous prime is 1042220099. The next prime is 1042220117. The reversal of 1042220101 is 1010222401.

It is a happy number.

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 1042220101 - 2¹ = 1042220099 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1042223101) 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, 15666 + ... + 48268.

It is an arithmetic number, because the mean of its divisors is an integer number (140360220).

Almost surely, 2^1042220101 is an apocalyptic number.

It is an amenable number.

1042220101 is a deficient number, since it is larger than the sum of its proper divisors (80661659).

1042220101 is a wasteful number, since it uses less digits than its factorization.

1042220101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35075.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1042220101 is about 32283.4338477182. The cubic root of 1042220101 is about 1013.8798261129.

Adding to 1042220101 its reverse (1010222401), we get a palindrome (2052442502).

The spelling of 1042220101 in words is "one billion, forty-two million, two hundred twenty thousand, one hundred one".