1572742141 has 4 divisors (see below), whose sum is σ = 1579268284. Its totient is φ = 1566216000.

The previous prime is 1572742117. The next prime is 1572742159. The reversal of 1572742141 is 1412472751.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1250683225 + 322058916 = 35365^2 + 17946^2 .

It is a cyclic number.

It is not a de Polignac number, because 1572742141 - 2¹⁵ = 1572709373 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1572742097 and 1572742106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1572742111) 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, 3262710 + ... + 3263191.

It is an arithmetic number, because the mean of its divisors is an integer number (394817071).

Almost surely, 2^1572742141 is an apocalyptic number.

It is an amenable number.

1572742141 is a deficient number, since it is larger than the sum of its proper divisors (6526143).

1572742141 is an equidigital number, since it uses as much as digits as its factorization.

1572742141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6526142.

The product of its digits is 15680, while the sum is 34.

The square root of 1572742141 is about 39657.8131141897. The cubic root of 1572742141 is about 1162.9271449322.

The spelling of 1572742141 in words is "one billion, five hundred seventy-two million, seven hundred forty-two thousand, one hundred forty-one".