106140978 has 24 divisors (see below), whose sum is σ = 233125308. Its totient is φ = 34895232.

The previous prime is 106140977. The next prime is 106141019. The reversal of 106140978 is 879041601.

It can be written as a sum of positive squares in 2 ways, for example, as 90954369 + 15186609 = 9537^2 + 3897^2 .

It is a super-2 number, since 2×106140978² = 22531814421592968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (106140971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39075 + ... + 41702.

Almost surely, 2^106140978 is an apocalyptic number.

106140978 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

106140978 is an abundant number, since it is smaller than the sum of its proper divisors (126984330).

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

106140978 is a wasteful number, since it uses less digits than its factorization.

106140978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80858 (or 80855 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 106140978 is about 10302.4743629868. The cubic root of 106140978 is about 473.4720661688.

The spelling of 106140978 in words is "one hundred six million, one hundred forty thousand, nine hundred seventy-eight".