1542644 has 6 divisors (see below), whose sum is σ = 2699634. Its totient is φ = 771320.

The previous prime is 1542599. The next prime is 1542661. The reversal of 1542644 is 4462451.

It can be written as a sum of positive squares in only one way, i.e., 1532644 + 10000 = 1238^2 + 100^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192827 + ... + 192834.

It is an arithmetic number, because the mean of its divisors is an integer number (449939).

2^1542644 is an apocalyptic number.

It is an amenable number.

1542644 is a deficient number, since it is larger than the sum of its proper divisors (1156990).

1542644 is a wasteful number, since it uses less digits than its factorization.

1542644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385665 (or 385663 counting only the distinct ones).

The product of its digits is 3840, while the sum is 26.

The square root of 1542644 is about 1242.0322057016. The cubic root of 1542644 is about 115.5460858172.

The spelling of 1542644 in words is "one million, five hundred forty-two thousand, six hundred forty-four".