1542641 has 8 divisors (see below), whose sum is σ = 1600104. Its totient is φ = 1486080.

The previous prime is 1542599. The next prime is 1542661. The reversal of 1542641 is 1462451.

It can be written as a sum of positive squares in 4 ways, for example, as 1081600 + 461041 = 1040^2 + 679^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1542641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1542661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6281 + ... + 6521.

It is an arithmetic number, because the mean of its divisors is an integer number (200013).

2^1542641 is an apocalyptic number.

It is an amenable number.

1542641 is a deficient number, since it is larger than the sum of its proper divisors (57463).

1542641 is a wasteful number, since it uses less digits than its factorization.

1542641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451.

The product of its digits is 960, while the sum is 23.

The square root of 1542641 is about 1242.0309980029. The cubic root of 1542641 is about 115.5460109159.

The spelling of 1542641 in words is "one million, five hundred forty-two thousand, six hundred forty-one".