106254021 has 4 divisors (see below), whose sum is σ = 141672032. Its totient is φ = 70836012.

The previous prime is 106254017. The next prime is 106254037. The reversal of 106254021 is 120452601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 120452601 = 3 ⋅40150867.

It is not a de Polignac number, because 106254021 - 2² = 106254017 is a prime.

It is a super-2 number, since 2×106254021² = 22579833957336882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106254011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17709001 + ... + 17709006.

It is an arithmetic number, because the mean of its divisors is an integer number (35418008).

Almost surely, 2^106254021 is an apocalyptic number.

It is an amenable number.

106254021 is a deficient number, since it is larger than the sum of its proper divisors (35418011).

106254021 is an equidigital number, since it uses as much as digits as its factorization.

106254021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35418010.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 106254021 is about 10307.9591093485. The cubic root of 106254021 is about 473.6400933656.

The spelling of 106254021 in words is "one hundred six million, two hundred fifty-four thousand, twenty-one".