1542987 has 12 divisors (see below), whose sum is σ = 2243904. Its totient is φ = 1021680.

The previous prime is 1542973. The next prime is 1542991. The reversal of 1542987 is 7892451.

It is not a de Polignac number, because 1542987 - 2¹⁰ = 1541963 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1542917) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1062 + ... + 2052.

It is an arithmetic number, because the mean of its divisors is an integer number (186992).

2^1542987 is an apocalyptic number.

1542987 is a deficient number, since it is larger than the sum of its proper divisors (700917).

1542987 is a wasteful number, since it uses less digits than its factorization.

1542987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1170 (or 1167 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 1542987 is about 1242.1702781825. The cubic root of 1542987 is about 115.5546489012.

The spelling of 1542987 in words is "one million, five hundred forty-two thousand, nine hundred eighty-seven".