1011421806 has 32 divisors (see below), whose sum is σ = 2105187840. Its totient is φ = 323556576.

The previous prime is 1011421771. The next prime is 1011421847. The reversal of 1011421806 is 6081241101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11655 + ... + 46461.

It is an arithmetic number, because the mean of its divisors is an integer number (65787120).

Almost surely, 2^1011421806 is an apocalyptic number.

1011421806 is an abundant number, since it is smaller than the sum of its proper divisors (1093766034).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1011421806 is a wasteful number, since it uses less digits than its factorization.

1011421806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35008.

The product of its (nonzero) digits is 384, while the sum is 24.

The square root of 1011421806 is about 31802.8584564344. The cubic root of 1011421806 is about 1003.7928646565.

Adding to 1011421806 its reverse (6081241101), we get a palindrome (7092662907).

The spelling of 1011421806 in words is "one billion, eleven million, four hundred twenty-one thousand, eight hundred six".