42152461 has 4 divisors (see below), whose sum is σ = 45394972. Its totient is φ = 38909952.

The previous prime is 42152449. The next prime is 42152471. The reversal of 42152461 is 16425124.

It is a happy number.

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 20529961 + 21622500 = 4531^2 + 4650^2 .

It is a cyclic number.

It is not a de Polignac number, because 42152461 - 2¹¹ = 42150413 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 (42152471) 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, 1621236 + ... + 1621261.

It is an arithmetic number, because the mean of its divisors is an integer number (11348743).

Almost surely, 2^42152461 is an apocalyptic number.

It is an amenable number.

42152461 is a deficient number, since it is larger than the sum of its proper divisors (3242511).

42152461 is a wasteful number, since it uses less digits than its factorization.

42152461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3242510.

The product of its digits is 1920, while the sum is 25.

The square root of 42152461 is about 6492.4926646089. The cubic root of 42152461 is about 348.0227585636.

Adding to 42152461 its reverse (16425124), we get a palindrome (58577585).

The spelling of 42152461 in words is "forty-two million, one hundred fifty-two thousand, four hundred sixty-one".