1390533742 has 32 divisors (see below), whose sum is σ = 2304862560. Its totient is φ = 625121280.

The previous prime is 1390533733. The next prime is 1390533763. The reversal of 1390533742 is 2473350931.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 455742 + ... + 458782.

It is an arithmetic number, because the mean of its divisors is an integer number (72026955).

Almost surely, 2^1390533742 is an apocalyptic number.

1390533742 is a deficient number, since it is larger than the sum of its proper divisors (914328818).

1390533742 is a wasteful number, since it uses less digits than its factorization.

1390533742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3508.

The product of its (nonzero) digits is 68040, while the sum is 37.

The square root of 1390533742 is about 37289.8611153220. The cubic root of 1390533742 is about 1116.1618572597.

The spelling of 1390533742 in words is "one billion, three hundred ninety million, five hundred thirty-three thousand, seven hundred forty-two".