1520415423 has 24 divisors (see below), whose sum is σ = 2286634896. Its totient is φ = 972662400.

The previous prime is 1520415343. The next prime is 1520415431. The reversal of 1520415423 is 3245140251.

It is not a de Polignac number, because 1520415423 - 2²⁶ = 1453306559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1520419423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11265 + ... + 56282.

It is an arithmetic number, because the mean of its divisors is an integer number (95276454).

Almost surely, 2^1520415423 is an apocalyptic number.

1520415423 is a deficient number, since it is larger than the sum of its proper divisors (766219473).

1520415423 is a wasteful number, since it uses less digits than its factorization.

1520415423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67655 (or 67652 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 1520415423 is about 38992.5047028272. The cubic root of 1520415423 is about 1149.8841529176.

Adding to 1520415423 its reverse (3245140251), we get a palindrome (4765555674).

It can be divided in two parts, 152041 and 5423, that added together give a cube (157464 = 54³).

The spelling of 1520415423 in words is "one billion, five hundred twenty million, four hundred fifteen thousand, four hundred twenty-three".