10121487 has 4 divisors (see below), whose sum is σ = 13495320. Its totient is φ = 6747656.

The previous prime is 10121479. The next prime is 10121491. The reversal of 10121487 is 78412101.

10121487 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10121487 - 2³ = 10121479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10121417) 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, 1686912 + ... + 1686917.

It is an arithmetic number, because the mean of its divisors is an integer number (3373830).

Almost surely, 2^10121487 is an apocalyptic number.

10121487 is a deficient number, since it is larger than the sum of its proper divisors (3373833).

10121487 is an equidigital number, since it uses as much as digits as its factorization.

10121487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3373832.

The product of its (nonzero) digits is 448, while the sum is 24.

The square root of 10121487 is about 3181.4284527551. The cubic root of 10121487 is about 216.3124122926.

Adding to 10121487 its reverse (78412101), we get a palindrome (88533588).

The spelling of 10121487 in words is "ten million, one hundred twenty-one thousand, four hundred eighty-seven".