1542161 has 4 divisors (see below), whose sum is σ = 1554432. Its totient is φ = 1529892.

The previous prime is 1542137. The next prime is 1542179. The reversal of 1542161 is 1612451.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1542161 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1542131) 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, 5945 + ... + 6198.

It is an arithmetic number, because the mean of its divisors is an integer number (388608).

2^1542161 is an apocalyptic number.

It is an amenable number.

1542161 is a deficient number, since it is larger than the sum of its proper divisors (12271).

1542161 is a wasteful number, since it uses less digits than its factorization.

1542161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12270.

The product of its digits is 240, while the sum is 20.

The square root of 1542161 is about 1241.8377510770. The cubic root of 1542161 is about 115.5340254445.

The spelling of 1542161 in words is "one million, five hundred forty-two thousand, one hundred sixty-one".