1240142132 has 6 divisors (see below), whose sum is σ = 2170248738. Its totient is φ = 620071064.

The previous prime is 1240142107. The next prime is 1240142149. The reversal of 1240142132 is 2312410421.

It can be written as a sum of positive squares in only one way, i.e., 895445776 + 344696356 = 29924^2 + 18566^2 .

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, 155017763 + ... + 155017770.

It is an arithmetic number, because the mean of its divisors is an integer number (361708123).

Almost surely, 2^1240142132 is an apocalyptic number.

It is an amenable number.

1240142132 is a deficient number, since it is larger than the sum of its proper divisors (930106606).

1240142132 is a wasteful number, since it uses less digits than its factorization.

1240142132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310035537 (or 310035535 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1240142132 is about 35215.6518042759. The cubic root of 1240142132 is about 1074.3781171833.

Adding to 1240142132 its reverse (2312410421), we get a palindrome (3552552553).

The spelling of 1240142132 in words is "one billion, two hundred forty million, one hundred forty-two thousand, one hundred thirty-two".