1240435542 has 32 divisors (see below), whose sum is σ = 2524314240. Its totient is φ = 406296000.

The previous prime is 1240435541. The next prime is 1240435561. The reversal of 1240435542 is 2455340421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240435541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79917 + ... + 94167.

It is an arithmetic number, because the mean of its divisors is an integer number (78884820).

Almost surely, 2^1240435542 is an apocalyptic number.

1240435542 is an abundant number, since it is smaller than the sum of its proper divisors (1283878698).

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

1240435542 is a wasteful number, since it uses less digits than its factorization.

1240435542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14508.

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 1240435542 is about 35219.8174611965. The cubic root of 1240435542 is about 1074.4628409198.

Adding to 1240435542 its reverse (2455340421), we get a palindrome (3695775963).

The spelling of 1240435542 in words is "one billion, two hundred forty million, four hundred thirty-five thousand, five hundred forty-two".