1742172078 has 32 divisors (see below), whose sum is σ = 3545523072. Its totient is φ = 570549600.

The previous prime is 1742172067. The next prime is 1742172079. The reversal of 1742172078 is 8702712471.

It is a super-3 number, since 3×1742172078³ (a number of 29 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1742172079) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 397125 + ... + 401487.

It is an arithmetic number, because the mean of its divisors is an integer number (110797596).

Almost surely, 2^1742172078 is an apocalyptic number.

1742172078 is an abundant number, since it is smaller than the sum of its proper divisors (1803350994).

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

1742172078 is a wasteful number, since it uses less digits than its factorization.

1742172078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5520.

The product of its (nonzero) digits is 43904, while the sum is 39.

The square root of 1742172078 is about 41739.3349012655. The cubic root of 1742172078 is about 1203.2716457832.

The spelling of 1742172078 in words is "one billion, seven hundred forty-two million, one hundred seventy-two thousand, seventy-eight".