15742242474 has 16 divisors (see below), whose sum is σ = 35982268608. Its totient is φ = 4497783552.

The previous prime is 15742242469. The next prime is 15742242491. The reversal of 15742242474 is 47424224751.

It is a super-2 number, since 2×15742242474² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 374815297 = 15742242474 / (1 + 5 + 7 + 4 + 2 + 2 + 4 + 2 + 4 + 7 + 4).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 187407607 + ... + 187407690.

It is an arithmetic number, because the mean of its divisors is an integer number (2248891788).

Almost surely, 2^15742242474 is an apocalyptic number.

15742242474 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

15742242474 is an abundant number, since it is smaller than the sum of its proper divisors (20240026134).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15742242474 is a wasteful number, since it uses less digits than its factorization.

15742242474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374815309.

The product of its digits is 501760, while the sum is 42.

The spelling of 15742242474 in words is "fifteen billion, seven hundred forty-two million, two hundred forty-two thousand, four hundred seventy-four".