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124041021 = 3135415879
BaseRepresentation
bin1110110010010…
…11011100111101
322122101221021220
413121023130331
5223223303041
620150343553
73034221426
oct731133475
9278357256
10124041021
1164021945
123565abb9
131c910370
141268c64d
hex764b73d

124041021 has 16 divisors (see below), whose sum is σ = 178469760. Its totient is φ = 76178880.

The previous prime is 124041007. The next prime is 124041059. The reversal of 124041021 is 120140421.

Adding to 124041021 its reverse (120140421), we get a palindrome (244181442).

It is not a de Polignac number, because 124041021 - 25 = 124040989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124041521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18160 + ... + 24038.

It is an arithmetic number, because the mean of its divisors is an integer number (11154360).

Almost surely, 2124041021 is an apocalyptic number.

It is an amenable number.

124041021 is a deficient number, since it is larger than the sum of its proper divisors (54428739).

124041021 is a wasteful number, since it uses less digits than its factorization.

124041021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6436.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 124041021 is about 11137.3704706273. The cubic root of 124041021 is about 498.7180774915.

The spelling of 124041021 in words is "one hundred twenty-four million, forty-one thousand, twenty-one".