1401506242 has 16 divisors (see below), whose sum is σ = 2235055680. Its totient is φ = 657637552.

The previous prime is 1401506233. The next prime is 1401506243. The reversal of 1401506242 is 2426051041.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1401506243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 284992 + ... + 289867.

It is an arithmetic number, because the mean of its divisors is an integer number (139690980).

Almost surely, 2^1401506242 is an apocalyptic number.

1401506242 is a deficient number, since it is larger than the sum of its proper divisors (833549438).

1401506242 is a wasteful number, since it uses less digits than its factorization.

1401506242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574937.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 1401506242 is about 37436.6964621613. The cubic root of 1401506242 is about 1119.0899926373.

Adding to 1401506242 its reverse (2426051041), we get a palindrome (3827557283).

The spelling of 1401506242 in words is "one billion, four hundred one million, five hundred six thousand, two hundred forty-two".