1378542 has 16 divisors (see below), whose sum is σ = 3007872. Its totient is φ = 417720.

The previous prime is 1378541. The next prime is 1378561. The reversal of 1378542 is 2458731.

1378542 = T₂₂₈ + T₂₂₉ + ... + T₂₇₁.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1378541) 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, 10378 + ... + 10509.

It is an arithmetic number, because the mean of its divisors is an integer number (187992).

2^1378542 is an apocalyptic number.

1378542 is an abundant number, since it is smaller than the sum of its proper divisors (1629330).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1378542 is a wasteful number, since it uses less digits than its factorization.

1378542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20903.

The product of its digits is 6720, while the sum is 30.

The square root of 1378542 is about 1174.1132824391. The cubic root of 1378542 is about 111.2944055362.

The spelling of 1378542 in words is "one million, three hundred seventy-eight thousand, five hundred forty-two".