103145515421 has 32 divisors (see below), whose sum is σ = 122882500608. Its totient is φ = 85751550720.

The previous prime is 103145515409. The next prime is 103145515433. The reversal of 103145515421 is 124515541301.

It is an interprime number because it is at equal distance from previous prime (103145515409) and next prime (103145515433).

It is a cyclic number.

It is not a de Polignac number, because 103145515421 - 2²² = 103141321117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103145515321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 192575 + ... + 493331.

It is an arithmetic number, because the mean of its divisors is an integer number (3840078144).

Almost surely, 2^103145515421 is an apocalyptic number.

It is an amenable number.

103145515421 is a deficient number, since it is larger than the sum of its proper divisors (19736985187).

103145515421 is a wasteful number, since it uses less digits than its factorization.

103145515421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300861.

The product of its (nonzero) digits is 12000, while the sum is 32.

The spelling of 103145515421 in words is "one hundred three billion, one hundred forty-five million, five hundred fifteen thousand, four hundred twenty-one".