1009402106 has 16 divisors (see below), whose sum is σ = 1568799144. Its totient is φ = 486710784.

The previous prime is 1009402099. The next prime is 1009402187. The reversal of 1009402106 is 6012049001.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 797554081 + 211848025 = 28241^2 + 14555^2 .

It is a super-2 number, since 2×1009402106² = 2037785223194470472, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51995 + ... + 68718.

Almost surely, 2^1009402106 is an apocalyptic number.

1009402106 is a deficient number, since it is larger than the sum of its proper divisors (559397038).

1009402106 is a wasteful number, since it uses less digits than its factorization.

1009402106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120865.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 1009402106 is about 31771.0891535056. The cubic root of 1009402106 is about 1003.1242641416.

The spelling of 1009402106 in words is "one billion, nine million, four hundred two thousand, one hundred six".