106419987 has 10 divisors (see below), whose sum is σ = 158973188. Its totient is φ = 70946604.

The previous prime is 106419979. The next prime is 106420003. The reversal of 106419987 is 789914601.

It is a happy number.

It is not a de Polignac number, because 106419987 - 2³ = 106419979 is a prime.

It is a super-2 number, since 2×106419987² = 22650427266160338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (106419967) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 656833 + ... + 656994.

Almost surely, 2^106419987 is an apocalyptic number.

106419987 is a deficient number, since it is larger than the sum of its proper divisors (52553201).

106419987 is an equidigital number, since it uses as much as digits as its factorization.

106419987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1313839 (or 1313830 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 106419987 is about 10316.0063493583. The cubic root of 106419987 is about 473.8865695570.

The spelling of 106419987 in words is "one hundred six million, four hundred nineteen thousand, nine hundred eighty-seven".