742987477 has 4 divisors (see below), whose sum is σ = 745057440. Its totient is φ = 740917516.

The previous prime is 742987471. The next prime is 742987481. The reversal of 742987477 is 774789247.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-742987477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742987471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1034443 + ... + 1035160.

It is an arithmetic number, because the mean of its divisors is an integer number (186264360).

Almost surely, 2^742987477 is an apocalyptic number.

It is an amenable number.

742987477 is a deficient number, since it is larger than the sum of its proper divisors (2069963).

742987477 is a wasteful number, since it uses less digits than its factorization.

742987477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2069962.

The product of its digits is 5531904, while the sum is 55.

The square root of 742987477 is about 27257.7966277540. The cubic root of 742987477 is about 905.7197359475.

The spelling of 742987477 in words is "seven hundred forty-two million, nine hundred eighty-seven thousand, four hundred seventy-seven".